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Finding the Fourth Proportional to 107,044.90, 147,691.80 and 61,719.32

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Solution

The fourth proportional to 107,044.90, 147,691.80 and 61,719.32 is: 85,155.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,044.90 : 147,691.80 = 61,719.32 : x
  2. Step 2: Convert to fraction form
    107,044.90/147,691.80 = 61,719.32/x
  3. Step 3: Cross multiply
    107,044.90x = 147,691.80 × 61,719.32
  4. Step 4: Simplify right side
    107,044.90x = 9,115,437,465.58
  5. Step 5: Solve for x
    x = 9,115,437,465.58/107,044.90
  6. Step 6: Final answer
    x = 85,155.27

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1.5x scale

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.