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Finding the Fourth Proportional to 153,573.57, 211,948.74 and 85,596.75

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Solution

The fourth proportional to 153,573.57, 211,948.74 and 85,596.75 is: 118,133.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,573.57 : 211,948.74 = 85,596.75 : x
  2. Step 2: Convert to fraction form
    153,573.57/211,948.74 = 85,596.75/x
  3. Step 3: Cross multiply
    153,573.57x = 211,948.74 × 85,596.75
  4. Step 4: Simplify right side
    153,573.57x = 18,142,123,310.60
  5. Step 5: Solve for x
    x = 18,142,123,310.60/153,573.57
  6. Step 6: Final answer
    x = 118,133.11

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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.