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Finding the Fourth Proportional to 109,656.32, 151,332.72 and 61,892.24

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Solution

The fourth proportional to 109,656.32, 151,332.72 and 61,892.24 is: 85,415.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,656.32 : 151,332.72 = 61,892.24 : x
  2. Step 2: Convert to fraction form
    109,656.32/151,332.72 = 61,892.24/x
  3. Step 3: Cross multiply
    109,656.32x = 151,332.72 × 61,892.24
  4. Step 4: Simplify right side
    109,656.32x = 9,366,321,026.09
  5. Step 5: Solve for x
    x = 9,366,321,026.09/109,656.32
  6. Step 6: Final answer
    x = 85,415.24

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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.