Home / 158,346.50-218,512.28-86,727.11

Finding the Fourth Proportional to 158,346.50, 218,512.28 and 86,727.11

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Solution

The fourth proportional to 158,346.50, 218,512.28 and 86,727.11 is: 119,680.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,346.50 : 218,512.28 = 86,727.11 : x
  2. Step 2: Convert to fraction form
    158,346.50/218,512.28 = 86,727.11/x
  3. Step 3: Cross multiply
    158,346.50x = 218,512.28 × 86,727.11
  4. Step 4: Simplify right side
    158,346.50x = 18,950,937,668.17
  5. Step 5: Solve for x
    x = 18,950,937,668.17/158,346.50
  6. Step 6: Final answer
    x = 119,680.18

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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.