Home / 132,218,962.30-198,328,443.45-78,471,250.30

Finding the Fourth Proportional to 132,218,962.30, 198,328,443.45 and 78,471,250.30

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Solution

The fourth proportional to 132,218,962.30, 198,328,443.45 and 78,471,250.30 is: 117,706,875.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,218,962.30 : 198,328,443.45 = 78,471,250.30 : x
  2. Step 2: Convert to fraction form
    132,218,962.30/198,328,443.45 = 78,471,250.30/x
  3. Step 3: Cross multiply
    132,218,962.30x = 198,328,443.45 × 78,471,250.30
  4. Step 4: Simplify right side
    132,218,962.30x = 15,563,080,927,574,344
  5. Step 5: Solve for x
    x = 15,563,080,927,574,344/132,218,962.30
  6. Step 6: Final answer
    x = 117,706,875.45

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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.