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Finding the Fourth Proportional to 157,070.98, 216,759.61 and 85,450.85

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Solution

The fourth proportional to 157,070.98, 216,759.61 and 85,450.85 is: 117,923.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,070.98 : 216,759.61 = 85,450.85 : x
  2. Step 2: Convert to fraction form
    157,070.98/216,759.61 = 85,450.85/x
  3. Step 3: Cross multiply
    157,070.98x = 216,759.61 × 85,450.85
  4. Step 4: Simplify right side
    157,070.98x = 18,522,292,756.03
  5. Step 5: Solve for x
    x = 18,522,292,756.03/157,070.98
  6. Step 6: Final answer
    x = 117,923.07

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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.