Home / 120,686.64-180,917.85-64,565.47

Finding the Fourth Proportional to 120,686.64, 180,917.85 and 64,565.47

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Solution

The fourth proportional to 120,686.64, 180,917.85 and 64,565.47 is: 96,788.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,686.64 : 180,917.85 = 64,565.47 : x
  2. Step 2: Convert to fraction form
    120,686.64/180,917.85 = 64,565.47/x
  3. Step 3: Cross multiply
    120,686.64x = 180,917.85 × 64,565.47
  4. Step 4: Simplify right side
    120,686.64x = 11,681,046,016.64
  5. Step 5: Solve for x
    x = 11,681,046,016.64/120,686.64
  6. Step 6: Final answer
    x = 96,788.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.