Home / 138,761.70-191,444.36-90,341.52

Finding the Fourth Proportional to 138,761.70, 191,444.36 and 90,341.52

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Solution

The fourth proportional to 138,761.70, 191,444.36 and 90,341.52 is: 124,640.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,761.70 : 191,444.36 = 90,341.52 : x
  2. Step 2: Convert to fraction form
    138,761.70/191,444.36 = 90,341.52/x
  3. Step 3: Cross multiply
    138,761.70x = 191,444.36 × 90,341.52
  4. Step 4: Simplify right side
    138,761.70x = 17,295,374,477.83
  5. Step 5: Solve for x
    x = 17,295,374,477.83/138,761.70
  6. Step 6: Final answer
    x = 124,640.84

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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.