Home / 148,987,746.15-205,620,988.64-90,248,687.79

Finding the Fourth Proportional to 148,987,746.15, 205,620,988.64 and 90,248,687.79

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Solution

The fourth proportional to 148,987,746.15, 205,620,988.64 and 90,248,687.79 is: 124,554,031.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,987,746.15 : 205,620,988.64 = 90,248,687.79 : x
  2. Step 2: Convert to fraction form
    148,987,746.15/205,620,988.64 = 90,248,687.79/x
  3. Step 3: Cross multiply
    148,987,746.15x = 205,620,988.64 × 90,248,687.79
  4. Step 4: Simplify right side
    148,987,746.15x = 18,557,024,406,391,252
  5. Step 5: Solve for x
    x = 18,557,024,406,391,252/148,987,746.15
  6. Step 6: Final answer
    x = 124,554,031.36

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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.