Home / 102,935.65-142,008.90-62,642.80

Finding the Fourth Proportional to 102,935.65, 142,008.90 and 62,642.80

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Solution

The fourth proportional to 102,935.65, 142,008.90 and 62,642.80 is: 86,421.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,935.65 : 142,008.90 = 62,642.80 : x
  2. Step 2: Convert to fraction form
    102,935.65/142,008.90 = 62,642.80/x
  3. Step 3: Cross multiply
    102,935.65x = 142,008.90 × 62,642.80
  4. Step 4: Simplify right side
    102,935.65x = 8,895,835,120.92
  5. Step 5: Solve for x
    x = 8,895,835,120.92/102,935.65
  6. Step 6: Final answer
    x = 86,421.32

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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.