Home / 157,555.28-217,413.96-85,931.12

Finding the Fourth Proportional to 157,555.28, 217,413.96 and 85,931.12

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Solution

The fourth proportional to 157,555.28, 217,413.96 and 85,931.12 is: 118,578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,555.28 : 217,413.96 = 85,931.12 : x
  2. Step 2: Convert to fraction form
    157,555.28/217,413.96 = 85,931.12/x
  3. Step 3: Cross multiply
    157,555.28x = 217,413.96 × 85,931.12
  4. Step 4: Simplify right side
    157,555.28x = 18,682,625,086.44
  5. Step 5: Solve for x
    x = 18,682,625,086.44/157,555.28
  6. Step 6: Final answer
    x = 118,578.22

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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.