Home / 154,549.76-213,245.88-90,864.32

Finding the Fourth Proportional to 154,549.76, 213,245.88 and 90,864.32

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Solution

The fourth proportional to 154,549.76, 213,245.88 and 90,864.32 is: 125,373.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,549.76 : 213,245.88 = 90,864.32 : x
  2. Step 2: Convert to fraction form
    154,549.76/213,245.88 = 90,864.32/x
  3. Step 3: Cross multiply
    154,549.76x = 213,245.88 × 90,864.32
  4. Step 4: Simplify right side
    154,549.76x = 19,376,441,879.00
  5. Step 5: Solve for x
    x = 19,376,441,879.00/154,549.76
  6. Step 6: Final answer
    x = 125,373.48

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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.