Home / 127,888.47-176,490.90-71,310.78

Finding the Fourth Proportional to 127,888.47, 176,490.90 and 71,310.78

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Solution

The fourth proportional to 127,888.47, 176,490.90 and 71,310.78 is: 98,411.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,888.47 : 176,490.90 = 71,310.78 : x
  2. Step 2: Convert to fraction form
    127,888.47/176,490.90 = 71,310.78/x
  3. Step 3: Cross multiply
    127,888.47x = 176,490.90 × 71,310.78
  4. Step 4: Simplify right side
    127,888.47x = 12,585,703,741.90
  5. Step 5: Solve for x
    x = 12,585,703,741.90/127,888.47
  6. Step 6: Final answer
    x = 98,411.56

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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.