Home / 187,091.40-280,550.70-81,856.20

Finding the Fourth Proportional to 187,091.40, 280,550.70 and 81,856.20

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Solution

The fourth proportional to 187,091.40, 280,550.70 and 81,856.20 is: 122,746.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,091.40 : 280,550.70 = 81,856.20 : x
  2. Step 2: Convert to fraction form
    187,091.40/280,550.70 = 81,856.20/x
  3. Step 3: Cross multiply
    187,091.40x = 280,550.70 × 81,856.20
  4. Step 4: Simplify right side
    187,091.40x = 22,964,814,209.34
  5. Step 5: Solve for x
    x = 22,964,814,209.34/187,091.40
  6. Step 6: Final answer
    x = 122,746.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.