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Finding the Fourth Proportional to 157,170.12, 216,894.56 and 85,549.92

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Solution

The fourth proportional to 157,170.12, 216,894.56 and 85,549.92 is: 118,058.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,170.12 : 216,894.56 = 85,549.92 : x
  2. Step 2: Convert to fraction form
    157,170.12/216,894.56 = 85,549.92/x
  3. Step 3: Cross multiply
    157,170.12x = 216,894.56 × 85,549.92
  4. Step 4: Simplify right side
    157,170.12x = 18,555,311,828.69
  5. Step 5: Solve for x
    x = 18,555,311,828.69/157,170.12
  6. Step 6: Final answer
    x = 118,058.77

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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.