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Finding the Fourth Proportional to 101,651.43, 140,279.80 and 56,330.18

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Solution

The fourth proportional to 101,651.43, 140,279.80 and 56,330.18 is: 77,736.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,651.43 : 140,279.80 = 56,330.18 : x
  2. Step 2: Convert to fraction form
    101,651.43/140,279.80 = 56,330.18/x
  3. Step 3: Cross multiply
    101,651.43x = 140,279.80 × 56,330.18
  4. Step 4: Simplify right side
    101,651.43x = 7,901,985,682.97
  5. Step 5: Solve for x
    x = 7,901,985,682.97/101,651.43
  6. Step 6: Final answer
    x = 77,736.10

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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.