Home / 148,960,045.78-205,561,642.05-86,238,788.47

Finding the Fourth Proportional to 148,960,045.78, 205,561,642.05 and 86,238,788.47

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Solution

The fourth proportional to 148,960,045.78, 205,561,642.05 and 86,238,788.47 is: 119,007,663.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,960,045.78 : 205,561,642.05 = 86,238,788.47 : x
  2. Step 2: Convert to fraction form
    148,960,045.78/205,561,642.05 = 86,238,788.47/x
  3. Step 3: Cross multiply
    148,960,045.78x = 205,561,642.05 × 86,238,788.47
  4. Step 4: Simplify right side
    148,960,045.78x = 17,727,386,965,781,904
  5. Step 5: Solve for x
    x = 17,727,386,965,781,904/148,960,045.78
  6. Step 6: Final answer
    x = 119,007,663.25

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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.