Home / 165,320.30-247,980.45-86,458.70

Finding the Fourth Proportional to 165,320.30, 247,980.45 and 86,458.70

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Solution

The fourth proportional to 165,320.30, 247,980.45 and 86,458.70 is: 129,688.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,320.30 : 247,980.45 = 86,458.70 : x
  2. Step 2: Convert to fraction form
    165,320.30/247,980.45 = 86,458.70/x
  3. Step 3: Cross multiply
    165,320.30x = 247,980.45 × 86,458.70
  4. Step 4: Simplify right side
    165,320.30x = 21,440,067,332.42
  5. Step 5: Solve for x
    x = 21,440,067,332.42/165,320.30
  6. Step 6: Final answer
    x = 129,688.05

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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.