Home / 138,585.60-191,248.36-74,923.45

Finding the Fourth Proportional to 138,585.60, 191,248.36 and 74,923.45

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Solution

The fourth proportional to 138,585.60, 191,248.36 and 74,923.45 is: 103,394.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,585.60 : 191,248.36 = 74,923.45 : x
  2. Step 2: Convert to fraction form
    138,585.60/191,248.36 = 74,923.45/x
  3. Step 3: Cross multiply
    138,585.60x = 191,248.36 × 74,923.45
  4. Step 4: Simplify right side
    138,585.60x = 14,328,986,272.61
  5. Step 5: Solve for x
    x = 14,328,986,272.61/138,585.60
  6. Step 6: Final answer
    x = 103,394.48

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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.