Home / 136,345.20-203,422.62-121,376.40

Finding the Fourth Proportional to 136,345.20, 203,422.62 and 121,376.40

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Solution

The fourth proportional to 136,345.20, 203,422.62 and 121,376.40 is: 181,089.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,345.20 : 203,422.62 = 121,376.40 : x
  2. Step 2: Convert to fraction form
    136,345.20/203,422.62 = 121,376.40/x
  3. Step 3: Cross multiply
    136,345.20x = 203,422.62 × 121,376.40
  4. Step 4: Simplify right side
    136,345.20x = 24,690,705,294.17
  5. Step 5: Solve for x
    x = 24,690,705,294.17/136,345.20
  6. Step 6: Final answer
    x = 181,089.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.