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Finding the Fourth Proportional to 147,897.80, 204,140.84 and 87,489.45

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Solution

The fourth proportional to 147,897.80, 204,140.84 and 87,489.45 is: 120,760.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,897.80 : 204,140.84 = 87,489.45 : x
  2. Step 2: Convert to fraction form
    147,897.80/204,140.84 = 87,489.45/x
  3. Step 3: Cross multiply
    147,897.80x = 204,140.84 × 87,489.45
  4. Step 4: Simplify right side
    147,897.80x = 17,860,169,814.14
  5. Step 5: Solve for x
    x = 17,860,169,814.14/147,897.80
  6. Step 6: Final answer
    x = 120,760.21

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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.