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Finding the Fourth Proportional to 158,347.08, 218,519.28 and 85,750.74

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Solution

The fourth proportional to 158,347.08, 218,519.28 and 85,750.74 is: 118,336.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,347.08 : 218,519.28 = 85,750.74 : x
  2. Step 2: Convert to fraction form
    158,347.08/218,519.28 = 85,750.74/x
  3. Step 3: Cross multiply
    158,347.08x = 218,519.28 × 85,750.74
  4. Step 4: Simplify right side
    158,347.08x = 18,738,189,964.27
  5. Step 5: Solve for x
    x = 18,738,189,964.27/158,347.08
  6. Step 6: Final answer
    x = 118,336.19

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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.