Home / 138,924.10-208,094.55-76,521.70

Finding the Fourth Proportional to 138,924.10, 208,094.55 and 76,521.70

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Solution

The fourth proportional to 138,924.10, 208,094.55 and 76,521.70 is: 114,621.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,924.10 : 208,094.55 = 76,521.70 : x
  2. Step 2: Convert to fraction form
    138,924.10/208,094.55 = 76,521.70/x
  3. Step 3: Cross multiply
    138,924.10x = 208,094.55 × 76,521.70
  4. Step 4: Simplify right side
    138,924.10x = 15,923,748,726.74
  5. Step 5: Solve for x
    x = 15,923,748,726.74/138,924.10
  6. Step 6: Final answer
    x = 114,621.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.