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Finding the Fourth Proportional to 153,073.72, 211,276.01 and 85,114.52

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Solution

The fourth proportional to 153,073.72, 211,276.01 and 85,114.52 is: 117,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,073.72 : 211,276.01 = 85,114.52 : x
  2. Step 2: Convert to fraction form
    153,073.72/211,276.01 = 85,114.52/x
  3. Step 3: Cross multiply
    153,073.72x = 211,276.01 × 85,114.52
  4. Step 4: Simplify right side
    153,073.72x = 17,982,656,178.67
  5. Step 5: Solve for x
    x = 17,982,656,178.67/153,073.72
  6. Step 6: Final answer
    x = 117,477.10

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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.