Home / 158,215.80-218,336.14-85,617.10

Finding the Fourth Proportional to 158,215.80, 218,336.14 and 85,617.10

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Solution

The fourth proportional to 158,215.80, 218,336.14 and 85,617.10 is: 118,150.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,215.80 : 218,336.14 = 85,617.10 : x
  2. Step 2: Convert to fraction form
    158,215.80/218,336.14 = 85,617.10/x
  3. Step 3: Cross multiply
    158,215.80x = 218,336.14 × 85,617.10
  4. Step 4: Simplify right side
    158,215.80x = 18,693,306,703.91
  5. Step 5: Solve for x
    x = 18,693,306,703.91/158,215.80
  6. Step 6: Final answer
    x = 118,150.69

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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.