Home / 158,279.21-218,416.65-86,645.37

Finding the Fourth Proportional to 158,279.21, 218,416.65 and 86,645.37

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Solution

The fourth proportional to 158,279.21, 218,416.65 and 86,645.37 is: 119,565.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,279.21 : 218,416.65 = 86,645.37 : x
  2. Step 2: Convert to fraction form
    158,279.21/218,416.65 = 86,645.37/x
  3. Step 3: Cross multiply
    158,279.21x = 218,416.65 × 86,645.37
  4. Step 4: Simplify right side
    158,279.21x = 18,924,791,453.41
  5. Step 5: Solve for x
    x = 18,924,791,453.41/158,279.21
  6. Step 6: Final answer
    x = 119,565.87

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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.