Home / 185,416.20-278,210.70-138,760.20

Finding the Fourth Proportional to 185,416.20, 278,210.70 and 138,760.20

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Solution

The fourth proportional to 185,416.20, 278,210.70 and 138,760.20 is: 208,204.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,416.20 : 278,210.70 = 138,760.20 : x
  2. Step 2: Convert to fraction form
    185,416.20/278,210.70 = 138,760.20/x
  3. Step 3: Cross multiply
    185,416.20x = 278,210.70 × 138,760.20
  4. Step 4: Simplify right side
    185,416.20x = 38,604,572,374.14
  5. Step 5: Solve for x
    x = 38,604,572,374.14/185,416.20
  6. Step 6: Final answer
    x = 208,204.96

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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.