Home / 137,099,013.42-189,146,990.49-90,081,394.79

Finding the Fourth Proportional to 137,099,013.42, 189,146,990.49 and 90,081,394.79

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Solution

The fourth proportional to 137,099,013.42, 189,146,990.49 and 90,081,394.79 is: 124,279,703.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,099,013.42 : 189,146,990.49 = 90,081,394.79 : x
  2. Step 2: Convert to fraction form
    137,099,013.42/189,146,990.49 = 90,081,394.79/x
  3. Step 3: Cross multiply
    137,099,013.42x = 189,146,990.49 × 90,081,394.79
  4. Step 4: Simplify right side
    137,099,013.42x = 17,038,624,723,670,068
  5. Step 5: Solve for x
    x = 17,038,624,723,670,068/137,099,013.42
  6. Step 6: Final answer
    x = 124,279,703.40

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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.