Home / 158,278.88-218,416.56-86,645.18

Finding the Fourth Proportional to 158,278.88, 218,416.56 and 86,645.18

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Solution

The fourth proportional to 158,278.88, 218,416.56 and 86,645.18 is: 119,565.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,278.88 : 218,416.56 = 86,645.18 : x
  2. Step 2: Convert to fraction form
    158,278.88/218,416.56 = 86,645.18/x
  3. Step 3: Cross multiply
    158,278.88x = 218,416.56 × 86,645.18
  4. Step 4: Simplify right side
    158,278.88x = 18,924,742,156.18
  5. Step 5: Solve for x
    x = 18,924,742,156.18/158,278.88
  6. Step 6: Final answer
    x = 119,565.81

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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.