Home / 158,381.30-218,566.94-86,761.15

Finding the Fourth Proportional to 158,381.30, 218,566.94 and 86,761.15

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Solution

The fourth proportional to 158,381.30, 218,566.94 and 86,761.15 is: 119,730.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,381.30 : 218,566.94 = 86,761.15 : x
  2. Step 2: Convert to fraction form
    158,381.30/218,566.94 = 86,761.15/x
  3. Step 3: Cross multiply
    158,381.30x = 218,566.94 × 86,761.15
  4. Step 4: Simplify right side
    158,381.30x = 18,963,118,086.16
  5. Step 5: Solve for x
    x = 18,963,118,086.16/158,381.30
  6. Step 6: Final answer
    x = 119,730.79

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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.