Home / 148,987,747.15-205,620,990.02-90,248,688.79

Finding the Fourth Proportional to 148,987,747.15, 205,620,990.02 and 90,248,688.79

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Solution

The fourth proportional to 148,987,747.15, 205,620,990.02 and 90,248,688.79 is: 124,554,032.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,987,747.15 : 205,620,990.02 = 90,248,688.79 : x
  2. Step 2: Convert to fraction form
    148,987,747.15/205,620,990.02 = 90,248,688.79/x
  3. Step 3: Cross multiply
    148,987,747.15x = 205,620,990.02 × 90,248,688.79
  4. Step 4: Simplify right side
    148,987,747.15x = 18,557,024,737,006,680
  5. Step 5: Solve for x
    x = 18,557,024,737,006,680/148,987,747.15
  6. Step 6: Final answer
    x = 124,554,032.74

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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.