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Finding the Fourth Proportional to 153,400.75, 211,691.01 and 84,488.89

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Solution

The fourth proportional to 153,400.75, 211,691.01 and 84,488.89 is: 116,593.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,400.75 : 211,691.01 = 84,488.89 : x
  2. Step 2: Convert to fraction form
    153,400.75/211,691.01 = 84,488.89/x
  3. Step 3: Cross multiply
    153,400.75x = 211,691.01 × 84,488.89
  4. Step 4: Simplify right side
    153,400.75x = 17,885,538,457.88
  5. Step 5: Solve for x
    x = 17,885,538,457.88/153,400.75
  6. Step 6: Final answer
    x = 116,593.55

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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.