Home / 102,936.65-142,010.28-62,643.80

Finding the Fourth Proportional to 102,936.65, 142,010.28 and 62,643.80

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Solution

The fourth proportional to 102,936.65, 142,010.28 and 62,643.80 is: 86,422.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,936.65 : 142,010.28 = 62,643.80 : x
  2. Step 2: Convert to fraction form
    102,936.65/142,010.28 = 62,643.80/x
  3. Step 3: Cross multiply
    102,936.65x = 142,010.28 × 62,643.80
  4. Step 4: Simplify right side
    102,936.65x = 8,896,063,578.26
  5. Step 5: Solve for x
    x = 8,896,063,578.26/102,936.65
  6. Step 6: Final answer
    x = 86,422.70

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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.