Home / 157,400.04-217,205.72-85,778.52

Finding the Fourth Proportional to 157,400.04, 217,205.72 and 85,778.52

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Solution

The fourth proportional to 157,400.04, 217,205.72 and 85,778.52 is: 118,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,400.04 : 217,205.72 = 85,778.52 : x
  2. Step 2: Convert to fraction form
    157,400.04/217,205.72 = 85,778.52/x
  3. Step 3: Cross multiply
    157,400.04x = 217,205.72 × 85,778.52
  4. Step 4: Simplify right side
    157,400.04x = 18,631,585,197.13
  5. Step 5: Solve for x
    x = 18,631,585,197.13/157,400.04
  6. Step 6: Final answer
    x = 118,370.91

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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.