Home / 138,514,681.40-191,150,158.89-75,791,191.23

Finding the Fourth Proportional to 138,514,681.40, 191,150,158.89 and 75,791,191.23

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Solution

The fourth proportional to 138,514,681.40, 191,150,158.89 and 75,791,191.23 is: 104,591,788.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,514,681.40 : 191,150,158.89 = 75,791,191.23 : x
  2. Step 2: Convert to fraction form
    138,514,681.40/191,150,158.89 = 75,791,191.23/x
  3. Step 3: Cross multiply
    138,514,681.40x = 191,150,158.89 × 75,791,191.23
  4. Step 4: Simplify right side
    138,514,681.40x = 14,487,498,245,121,122
  5. Step 5: Solve for x
    x = 14,487,498,245,121,122/138,514,681.40
  6. Step 6: Final answer
    x = 104,591,788.38

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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.