Home / 120,276.32-165,981.64-66,565.04

Finding the Fourth Proportional to 120,276.32, 165,981.64 and 66,565.04

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Solution

The fourth proportional to 120,276.32, 165,981.64 and 66,565.04 is: 91,859.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,276.32 : 165,981.64 = 66,565.04 : x
  2. Step 2: Convert to fraction form
    120,276.32/165,981.64 = 66,565.04/x
  3. Step 3: Cross multiply
    120,276.32x = 165,981.64 × 66,565.04
  4. Step 4: Simplify right side
    120,276.32x = 11,048,574,505.87
  5. Step 5: Solve for x
    x = 11,048,574,505.87/120,276.32
  6. Step 6: Final answer
    x = 91,859.93

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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.