Home / 137,439,056,900.65-189,662,924,231.51-79,569,876,771.27

Finding the Fourth Proportional to 137,439,056,900.65, 189,662,924,231.51 and 79,569,876,771.27

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Solution

The fourth proportional to 137,439,056,900.65, 189,662,924,231.51 and 79,569,876,771.27 is: 109,804,707,988.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,439,056,900.65 : 189,662,924,231.51 = 79,569,876,771.27 : x
  2. Step 2: Convert to fraction form
    137,439,056,900.65/189,662,924,231.51 = 79,569,876,771.27/x
  3. Step 3: Cross multiply
    137,439,056,900.65x = 189,662,924,231.51 × 79,569,876,771.27
  4. Step 4: Simplify right side
    137,439,056,900.65x = 15,091,455,509,179,970,617,344
  5. Step 5: Solve for x
    x = 15,091,455,509,179,970,617,344/137,439,056,900.65
  6. Step 6: Final answer
    x = 109,804,707,988.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.