Home / 128,035.20-176,685.84-71,445.36

Finding the Fourth Proportional to 128,035.20, 176,685.84 and 71,445.36

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Solution

The fourth proportional to 128,035.20, 176,685.84 and 71,445.36 is: 98,593.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,035.20 : 176,685.84 = 71,445.36 : x
  2. Step 2: Convert to fraction form
    128,035.20/176,685.84 = 71,445.36/x
  3. Step 3: Cross multiply
    128,035.20x = 176,685.84 × 71,445.36
  4. Step 4: Simplify right side
    128,035.20x = 12,623,383,445.70
  5. Step 5: Solve for x
    x = 12,623,383,445.70/128,035.20
  6. Step 6: Final answer
    x = 98,593.07

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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.