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Finding the Fourth Proportional to 153,592, 212,028 and 108,306.88

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Solution

The fourth proportional to 153,592, 212,028 and 108,306.88 is: 149,513.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,592 : 212,028 = 108,306.88 : x
  2. Step 2: Convert to fraction form
    153,592/212,028 = 108,306.88/x
  3. Step 3: Cross multiply
    153,592x = 212,028 × 108,306.88
  4. Step 4: Simplify right side
    153,592x = 22,964,091,152.64
  5. Step 5: Solve for x
    x = 22,964,091,152.64/153,592
  6. Step 6: Final answer
    x = 149,513.59

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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.