Home / 101,972.07-140,721.32-56,654.24

Finding the Fourth Proportional to 101,972.07, 140,721.32 and 56,654.24

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Solution

The fourth proportional to 101,972.07, 140,721.32 and 56,654.24 is: 78,182.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,972.07 : 140,721.32 = 56,654.24 : x
  2. Step 2: Convert to fraction form
    101,972.07/140,721.32 = 56,654.24/x
  3. Step 3: Cross multiply
    101,972.07x = 140,721.32 × 56,654.24
  4. Step 4: Simplify right side
    101,972.07x = 7,972,459,436.40
  5. Step 5: Solve for x
    x = 7,972,459,436.40/101,972.07
  6. Step 6: Final answer
    x = 78,182.78

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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.