Home / 138,650.20-191,337.41-74,988.00

Finding the Fourth Proportional to 138,650.20, 191,337.41 and 74,988.00

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Solution

The fourth proportional to 138,650.20, 191,337.41 and 74,988.00 is: 103,483.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,650.20 : 191,337.41 = 74,988.00 : x
  2. Step 2: Convert to fraction form
    138,650.20/191,337.41 = 74,988.00/x
  3. Step 3: Cross multiply
    138,650.20x = 191,337.41 × 74,988.00
  4. Step 4: Simplify right side
    138,650.20x = 14,348,009,726.93
  5. Step 5: Solve for x
    x = 14,348,009,726.93/138,650.20
  6. Step 6: Final answer
    x = 103,483.51

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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.