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Finding the Fourth Proportional to 153,108.48, 211,306.32 and 89,467.68

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Solution

The fourth proportional to 153,108.48, 211,306.32 and 89,467.68 is: 123,475.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,108.48 : 211,306.32 = 89,467.68 : x
  2. Step 2: Convert to fraction form
    153,108.48/211,306.32 = 89,467.68/x
  3. Step 3: Cross multiply
    153,108.48x = 211,306.32 × 89,467.68
  4. Step 4: Simplify right side
    153,108.48x = 18,905,086,219.74
  5. Step 5: Solve for x
    x = 18,905,086,219.74/153,108.48
  6. Step 6: Final answer
    x = 123,475.11

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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.