Home / 145,327.60-200,528.76-81,665.20

Finding the Fourth Proportional to 145,327.60, 200,528.76 and 81,665.20

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Solution

The fourth proportional to 145,327.60, 200,528.76 and 81,665.20 is: 112,684.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,327.60 : 200,528.76 = 81,665.20 : x
  2. Step 2: Convert to fraction form
    145,327.60/200,528.76 = 81,665.20/x
  3. Step 3: Cross multiply
    145,327.60x = 200,528.76 × 81,665.20
  4. Step 4: Simplify right side
    145,327.60x = 16,376,221,291.15
  5. Step 5: Solve for x
    x = 16,376,221,291.15/145,327.60
  6. Step 6: Final answer
    x = 112,684.87

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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.