Home / 103,412.16-142,724.20-63,149.26

Finding the Fourth Proportional to 103,412.16, 142,724.20 and 63,149.26

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Solution

The fourth proportional to 103,412.16, 142,724.20 and 63,149.26 is: 87,155.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,412.16 : 142,724.20 = 63,149.26 : x
  2. Step 2: Convert to fraction form
    103,412.16/142,724.20 = 63,149.26/x
  3. Step 3: Cross multiply
    103,412.16x = 142,724.20 × 63,149.26
  4. Step 4: Simplify right side
    103,412.16x = 9,012,927,614.09
  5. Step 5: Solve for x
    x = 9,012,927,614.09/103,412.16
  6. Step 6: Final answer
    x = 87,155.39

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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.