Home / 138,864.60-191,633.22-75,202.68

Finding the Fourth Proportional to 138,864.60, 191,633.22 and 75,202.68

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Solution

The fourth proportional to 138,864.60, 191,633.22 and 75,202.68 is: 103,779.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,864.60 : 191,633.22 = 75,202.68 : x
  2. Step 2: Convert to fraction form
    138,864.60/191,633.22 = 75,202.68/x
  3. Step 3: Cross multiply
    138,864.60x = 191,633.22 × 75,202.68
  4. Step 4: Simplify right side
    138,864.60x = 14,411,331,721.03
  5. Step 5: Solve for x
    x = 14,411,331,721.03/138,864.60
  6. Step 6: Final answer
    x = 103,779.74

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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.