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Finding the Fourth Proportional to 158,216.80, 218,337.52 and 85,618.10

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Solution

The fourth proportional to 158,216.80, 218,337.52 and 85,618.10 is: 118,152.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,216.80 : 218,337.52 = 85,618.10 : x
  2. Step 2: Convert to fraction form
    158,216.80/218,337.52 = 85,618.10/x
  3. Step 3: Cross multiply
    158,216.80x = 218,337.52 × 85,618.10
  4. Step 4: Simplify right side
    158,216.80x = 18,693,643,193.02
  5. Step 5: Solve for x
    x = 18,693,643,193.02/158,216.80
  6. Step 6: Final answer
    x = 118,152.07

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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.