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Finding the Fourth Proportional to 153,468.87, 211,758.96 and 85,484.10

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Solution

The fourth proportional to 153,468.87, 211,758.96 and 85,484.10 is: 117,952.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,468.87 : 211,758.96 = 85,484.10 : x
  2. Step 2: Convert to fraction form
    153,468.87/211,758.96 = 85,484.10/x
  3. Step 3: Cross multiply
    153,468.87x = 211,758.96 × 85,484.10
  4. Step 4: Simplify right side
    153,468.87x = 18,102,025,227.20
  5. Step 5: Solve for x
    x = 18,102,025,227.20/153,468.87
  6. Step 6: Final answer
    x = 117,952.43

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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.