Home / 138,586.19-191,248.95-74,923.97

Finding the Fourth Proportional to 138,586.19, 191,248.95 and 74,923.97

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Solution

The fourth proportional to 138,586.19, 191,248.95 and 74,923.97 is: 103,395.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,586.19 : 191,248.95 = 74,923.97 : x
  2. Step 2: Convert to fraction form
    138,586.19/191,248.95 = 74,923.97/x
  3. Step 3: Cross multiply
    138,586.19x = 191,248.95 × 74,923.97
  4. Step 4: Simplify right side
    138,586.19x = 14,329,129,636.09
  5. Step 5: Solve for x
    x = 14,329,129,636.09/138,586.19
  6. Step 6: Final answer
    x = 103,395.08

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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.