Home / 138,678.28-191,376.10-75,016.08

Finding the Fourth Proportional to 138,678.28, 191,376.10 and 75,016.08

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Solution

The fourth proportional to 138,678.28, 191,376.10 and 75,016.08 is: 103,522.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,678.28 : 191,376.10 = 75,016.08 : x
  2. Step 2: Convert to fraction form
    138,678.28/191,376.10 = 75,016.08/x
  3. Step 3: Cross multiply
    138,678.28x = 191,376.10 × 75,016.08
  4. Step 4: Simplify right side
    138,678.28x = 14,356,284,827.69
  5. Step 5: Solve for x
    x = 14,356,284,827.69/138,678.28
  6. Step 6: Final answer
    x = 103,522.23

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1.5x scale

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.