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Finding the Fourth Proportional to 154,084.80, 230,878.80 and 87,326.40

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Solution

The fourth proportional to 154,084.80, 230,878.80 and 87,326.40 is: 130,848.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,084.80 : 230,878.80 = 87,326.40 : x
  2. Step 2: Convert to fraction form
    154,084.80/230,878.80 = 87,326.40/x
  3. Step 3: Cross multiply
    154,084.80x = 230,878.80 × 87,326.40
  4. Step 4: Simplify right side
    154,084.80x = 20,161,814,440.32
  5. Step 5: Solve for x
    x = 20,161,814,440.32/154,084.80
  6. Step 6: Final answer
    x = 130,848.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.