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Finding the Fourth Proportional to 101,543.28, 140,141.88 and 63,812.40

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Solution

The fourth proportional to 101,543.28, 140,141.88 and 63,812.40 is: 88,068.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,543.28 : 140,141.88 = 63,812.40 : x
  2. Step 2: Convert to fraction form
    101,543.28/140,141.88 = 63,812.40/x
  3. Step 3: Cross multiply
    101,543.28x = 140,141.88 × 63,812.40
  4. Step 4: Simplify right side
    101,543.28x = 8,942,789,703.31
  5. Step 5: Solve for x
    x = 8,942,789,703.31/101,543.28
  6. Step 6: Final answer
    x = 88,068.75

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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.