Home / 138,665.60-191,358.02-75,003.40

Finding the Fourth Proportional to 138,665.60, 191,358.02 and 75,003.40

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Solution

The fourth proportional to 138,665.60, 191,358.02 and 75,003.40 is: 103,504.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,665.60 : 191,358.02 = 75,003.40 : x
  2. Step 2: Convert to fraction form
    138,665.60/191,358.02 = 75,003.40/x
  3. Step 3: Cross multiply
    138,665.60x = 191,358.02 × 75,003.40
  4. Step 4: Simplify right side
    138,665.60x = 14,352,502,117.27
  5. Step 5: Solve for x
    x = 14,352,502,117.27/138,665.60
  6. Step 6: Final answer
    x = 103,504.42

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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.