Home / 138,412.23-191,008.83-74,750.04

Finding the Fourth Proportional to 138,412.23, 191,008.83 and 74,750.04

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Solution

The fourth proportional to 138,412.23, 191,008.83 and 74,750.04 is: 103,155.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,412.23 : 191,008.83 = 74,750.04 : x
  2. Step 2: Convert to fraction form
    138,412.23/191,008.83 = 74,750.04/x
  3. Step 3: Cross multiply
    138,412.23x = 191,008.83 × 74,750.04
  4. Step 4: Simplify right side
    138,412.23x = 14,277,917,963.17
  5. Step 5: Solve for x
    x = 14,277,917,963.17/138,412.23
  6. Step 6: Final answer
    x = 103,155.03

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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.