Home / 157,280.40-217,028.16-89,272.80

Finding the Fourth Proportional to 157,280.40, 217,028.16 and 89,272.80

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Solution

The fourth proportional to 157,280.40, 217,028.16 and 89,272.80 is: 123,185.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,280.40 : 217,028.16 = 89,272.80 : x
  2. Step 2: Convert to fraction form
    157,280.40/217,028.16 = 89,272.80/x
  3. Step 3: Cross multiply
    157,280.40x = 217,028.16 × 89,272.80
  4. Step 4: Simplify right side
    157,280.40x = 19,374,711,522.05
  5. Step 5: Solve for x
    x = 19,374,711,522.05/157,280.40
  6. Step 6: Final answer
    x = 123,185.80

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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.