Home / 138,591.48-191,256.18-74,929.26

Finding the Fourth Proportional to 138,591.48, 191,256.18 and 74,929.26

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Solution

The fourth proportional to 138,591.48, 191,256.18 and 74,929.26 is: 103,402.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,591.48 : 191,256.18 = 74,929.26 : x
  2. Step 2: Convert to fraction form
    138,591.48/191,256.18 = 74,929.26/x
  3. Step 3: Cross multiply
    138,591.48x = 191,256.18 × 74,929.26
  4. Step 4: Simplify right side
    138,591.48x = 14,330,684,037.83
  5. Step 5: Solve for x
    x = 14,330,684,037.83/138,591.48
  6. Step 6: Final answer
    x = 103,402.35

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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.