Home / 153,830.52-212,229.24-90,145.08

Finding the Fourth Proportional to 153,830.52, 212,229.24 and 90,145.08

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Solution

The fourth proportional to 153,830.52, 212,229.24 and 90,145.08 is: 124,366.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,830.52 : 212,229.24 = 90,145.08 : x
  2. Step 2: Convert to fraction form
    153,830.52/212,229.24 = 90,145.08/x
  3. Step 3: Cross multiply
    153,830.52x = 212,229.24 × 90,145.08
  4. Step 4: Simplify right side
    153,830.52x = 19,131,421,818.14
  5. Step 5: Solve for x
    x = 19,131,421,818.14/153,830.52
  6. Step 6: Final answer
    x = 124,366.88

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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.