Home / 158,416.40-218,613.66-86,796.20

Finding the Fourth Proportional to 158,416.40, 218,613.66 and 86,796.20

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Solution

The fourth proportional to 158,416.40, 218,613.66 and 86,796.20 is: 119,778.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,416.40 : 218,613.66 = 86,796.20 : x
  2. Step 2: Convert to fraction form
    158,416.40/218,613.66 = 86,796.20/x
  3. Step 3: Cross multiply
    158,416.40x = 218,613.66 × 86,796.20
  4. Step 4: Simplify right side
    158,416.40x = 18,974,834,956.09
  5. Step 5: Solve for x
    x = 18,974,834,956.09/158,416.40
  6. Step 6: Final answer
    x = 119,778.22

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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.