Home / 157,362.12-217,156.92-85,742.70

Finding the Fourth Proportional to 157,362.12, 217,156.92 and 85,742.70

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Solution

The fourth proportional to 157,362.12, 217,156.92 and 85,742.70 is: 118,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,362.12 : 217,156.92 = 85,742.70 : x
  2. Step 2: Convert to fraction form
    157,362.12/217,156.92 = 85,742.70/x
  3. Step 3: Cross multiply
    157,362.12x = 217,156.92 × 85,742.70
  4. Step 4: Simplify right side
    157,362.12x = 18,619,620,644.48
  5. Step 5: Solve for x
    x = 18,619,620,644.48/157,362.12
  6. Step 6: Final answer
    x = 118,323.40

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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.