Home / 142,757.02-197,045.22-86,172.04

Finding the Fourth Proportional to 142,757.02, 197,045.22 and 86,172.04

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Solution

The fourth proportional to 142,757.02, 197,045.22 and 86,172.04 is: 118,941.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,757.02 : 197,045.22 = 86,172.04 : x
  2. Step 2: Convert to fraction form
    142,757.02/197,045.22 = 86,172.04/x
  3. Step 3: Cross multiply
    142,757.02x = 197,045.22 × 86,172.04
  4. Step 4: Simplify right side
    142,757.02x = 16,979,788,579.65
  5. Step 5: Solve for x
    x = 16,979,788,579.65/142,757.02
  6. Step 6: Final answer
    x = 118,941.88

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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.