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Finding the Fourth Proportional to 101,712.29, 140,366.37 and 56,387.57

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Solution

The fourth proportional to 101,712.29, 140,366.37 and 56,387.57 is: 77,816.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,712.29 : 140,366.37 = 56,387.57 : x
  2. Step 2: Convert to fraction form
    101,712.29/140,366.37 = 56,387.57/x
  3. Step 3: Cross multiply
    101,712.29x = 140,366.37 × 56,387.57
  4. Step 4: Simplify right side
    101,712.29x = 7,914,918,514.02
  5. Step 5: Solve for x
    x = 7,914,918,514.02/101,712.29
  6. Step 6: Final answer
    x = 77,816.74

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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.