Home / 158,642.12-218,924.06-90,658.32

Finding the Fourth Proportional to 158,642.12, 218,924.06 and 90,658.32

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Solution

The fourth proportional to 158,642.12, 218,924.06 and 90,658.32 is: 125,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,642.12 : 218,924.06 = 90,658.32 : x
  2. Step 2: Convert to fraction form
    158,642.12/218,924.06 = 90,658.32/x
  3. Step 3: Cross multiply
    158,642.12x = 218,924.06 × 90,658.32
  4. Step 4: Simplify right side
    158,642.12x = 19,847,287,487.18
  5. Step 5: Solve for x
    x = 19,847,287,487.18/158,642.12
  6. Step 6: Final answer
    x = 125,107.30

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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.