Home / 153,731.35-212,140.13-89,195.59

Finding the Fourth Proportional to 153,731.35, 212,140.13 and 89,195.59

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Solution

The fourth proportional to 153,731.35, 212,140.13 and 89,195.59 is: 123,084.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,731.35 : 212,140.13 = 89,195.59 : x
  2. Step 2: Convert to fraction form
    153,731.35/212,140.13 = 89,195.59/x
  3. Step 3: Cross multiply
    153,731.35x = 212,140.13 × 89,195.59
  4. Step 4: Simplify right side
    153,731.35x = 18,921,963,612.05
  5. Step 5: Solve for x
    x = 18,921,963,612.05/153,731.35
  6. Step 6: Final answer
    x = 123,084.61

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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.