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Finding the Fourth Proportional to 153,575.89, 211,951.92 and 85,599.07

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Solution

The fourth proportional to 153,575.89, 211,951.92 and 85,599.07 is: 118,136.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,575.89 : 211,951.92 = 85,599.07 : x
  2. Step 2: Convert to fraction form
    153,575.89/211,951.92 = 85,599.07/x
  3. Step 3: Cross multiply
    153,575.89x = 211,951.92 × 85,599.07
  4. Step 4: Simplify right side
    153,575.89x = 18,142,887,236.71
  5. Step 5: Solve for x
    x = 18,142,887,236.71/153,575.89
  6. Step 6: Final answer
    x = 118,136.30

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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.