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Finding the Fourth Proportional to 153,108.97, 211,297.41 and 85,132.93

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Solution

The fourth proportional to 153,108.97, 211,297.41 and 85,132.93 is: 117,487.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,108.97 : 211,297.41 = 85,132.93 : x
  2. Step 2: Convert to fraction form
    153,108.97/211,297.41 = 85,132.93/x
  3. Step 3: Cross multiply
    153,108.97x = 211,297.41 × 85,132.93
  4. Step 4: Simplify right side
    153,108.97x = 17,988,367,614.71
  5. Step 5: Solve for x
    x = 17,988,367,614.71/153,108.97
  6. Step 6: Final answer
    x = 117,487.35

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1.5x scale

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.