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Finding the Fourth Proportional to 101,385.80, 152,165.10 and 45,312.20

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Solution

The fourth proportional to 101,385.80, 152,165.10 and 45,312.20 is: 68,006.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,385.80 : 152,165.10 = 45,312.20 : x
  2. Step 2: Convert to fraction form
    101,385.80/152,165.10 = 45,312.20/x
  3. Step 3: Cross multiply
    101,385.80x = 152,165.10 × 45,312.20
  4. Step 4: Simplify right side
    101,385.80x = 6,894,935,444.22
  5. Step 5: Solve for x
    x = 6,894,935,444.22/101,385.80
  6. Step 6: Final answer
    x = 68,006.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.