Home / 158,217.18-218,338.03-85,618.47

Finding the Fourth Proportional to 158,217.18, 218,338.03 and 85,618.47

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Solution

The fourth proportional to 158,217.18, 218,338.03 and 85,618.47 is: 118,152.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,217.18 : 218,338.03 = 85,618.47 : x
  2. Step 2: Convert to fraction form
    158,217.18/218,338.03 = 85,618.47/x
  3. Step 3: Cross multiply
    158,217.18x = 218,338.03 × 85,618.47
  4. Step 4: Simplify right side
    158,217.18x = 18,693,767,857.37
  5. Step 5: Solve for x
    x = 18,693,767,857.37/158,217.18
  6. Step 6: Final answer
    x = 118,152.58

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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.