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Finding the Fourth Proportional to 153,236.80, 211,462.74 and 85,250.32

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Solution

The fourth proportional to 153,236.80, 211,462.74 and 85,250.32 is: 117,643.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,236.80 : 211,462.74 = 85,250.32 : x
  2. Step 2: Convert to fraction form
    153,236.80/211,462.74 = 85,250.32/x
  3. Step 3: Cross multiply
    153,236.80x = 211,462.74 × 85,250.32
  4. Step 4: Simplify right side
    153,236.80x = 18,027,266,253.08
  5. Step 5: Solve for x
    x = 18,027,266,253.08/153,236.80
  6. Step 6: Final answer
    x = 117,643.19

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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.