Home / 128,418,000.80-192,627,001.20-73,998,442.40

Finding the Fourth Proportional to 128,418,000.80, 192,627,001.20 and 73,998,442.40

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Solution

The fourth proportional to 128,418,000.80, 192,627,001.20 and 73,998,442.40 is: 110,997,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,418,000.80 : 192,627,001.20 = 73,998,442.40 : x
  2. Step 2: Convert to fraction form
    128,418,000.80/192,627,001.20 = 73,998,442.40/x
  3. Step 3: Cross multiply
    128,418,000.80x = 192,627,001.20 × 73,998,442.40
  4. Step 4: Simplify right side
    128,418,000.80x = 14,254,098,052,982,932
  5. Step 5: Solve for x
    x = 14,254,098,052,982,932/128,418,000.80
  6. Step 6: Final answer
    x = 110,997,663.60

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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.