Home / 159,364.12-219,872.80-90,442.16

Finding the Fourth Proportional to 159,364.12, 219,872.80 and 90,442.16

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Solution

The fourth proportional to 159,364.12, 219,872.80 and 90,442.16 is: 124,781.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,364.12 : 219,872.80 = 90,442.16 : x
  2. Step 2: Convert to fraction form
    159,364.12/219,872.80 = 90,442.16/x
  3. Step 3: Cross multiply
    159,364.12x = 219,872.80 × 90,442.16
  4. Step 4: Simplify right side
    159,364.12x = 19,885,770,957.25
  5. Step 5: Solve for x
    x = 19,885,770,957.25/159,364.12
  6. Step 6: Final answer
    x = 124,781.98

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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.