Home / 157,439.08-217,261.60-85,820.50

Finding the Fourth Proportional to 157,439.08, 217,261.60 and 85,820.50

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Solution

The fourth proportional to 157,439.08, 217,261.60 and 85,820.50 is: 118,429.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,439.08 : 217,261.60 = 85,820.50 : x
  2. Step 2: Convert to fraction form
    157,439.08/217,261.60 = 85,820.50/x
  3. Step 3: Cross multiply
    157,439.08x = 217,261.60 × 85,820.50
  4. Step 4: Simplify right side
    157,439.08x = 18,645,499,142.80
  5. Step 5: Solve for x
    x = 18,645,499,142.80/157,439.08
  6. Step 6: Final answer
    x = 118,429.93

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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.