Home / 157,766.40-217,718.43-86,146.42

Finding the Fourth Proportional to 157,766.40, 217,718.43 and 86,146.42

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Solution

The fourth proportional to 157,766.40, 217,718.43 and 86,146.42 is: 118,882.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,766.40 : 217,718.43 = 86,146.42 : x
  2. Step 2: Convert to fraction form
    157,766.40/217,718.43 = 86,146.42/x
  3. Step 3: Cross multiply
    157,766.40x = 217,718.43 × 86,146.42
  4. Step 4: Simplify right side
    157,766.40x = 18,755,663,312.52
  5. Step 5: Solve for x
    x = 18,755,663,312.52/157,766.40
  6. Step 6: Final answer
    x = 118,882.50

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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.