Home / 142,988,376.20-214,482,564.30-40,739,127.80

Finding the Fourth Proportional to 142,988,376.20, 214,482,564.30 and 40,739,127.80

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Solution

The fourth proportional to 142,988,376.20, 214,482,564.30 and 40,739,127.80 is: 61,108,691.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,988,376.20 : 214,482,564.30 = 40,739,127.80 : x
  2. Step 2: Convert to fraction form
    142,988,376.20/214,482,564.30 = 40,739,127.80/x
  3. Step 3: Cross multiply
    142,988,376.20x = 214,482,564.30 × 40,739,127.80
  4. Step 4: Simplify right side
    142,988,376.20x = 8,737,832,597,889,417
  5. Step 5: Solve for x
    x = 8,737,832,597,889,417/142,988,376.20
  6. Step 6: Final answer
    x = 61,108,691.70

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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.