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Finding the Fourth Proportional to 101,675.79, 140,308.88 and 61,385.76

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Solution

The fourth proportional to 101,675.79, 140,308.88 and 61,385.76 is: 84,710.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,675.79 : 140,308.88 = 61,385.76 : x
  2. Step 2: Convert to fraction form
    101,675.79/140,308.88 = 61,385.76/x
  3. Step 3: Cross multiply
    101,675.79x = 140,308.88 × 61,385.76
  4. Step 4: Simplify right side
    101,675.79x = 8,612,966,926.62
  5. Step 5: Solve for x
    x = 8,612,966,926.62/101,675.79
  6. Step 6: Final answer
    x = 84,710.11

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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.