Home / 155,280.79-214,286.20-87,298.07

Finding the Fourth Proportional to 155,280.79, 214,286.20 and 87,298.07

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Solution

The fourth proportional to 155,280.79, 214,286.20 and 87,298.07 is: 120,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,280.79 : 214,286.20 = 87,298.07 : x
  2. Step 2: Convert to fraction form
    155,280.79/214,286.20 = 87,298.07/x
  3. Step 3: Cross multiply
    155,280.79x = 214,286.20 × 87,298.07
  4. Step 4: Simplify right side
    155,280.79x = 18,706,770,397.96
  5. Step 5: Solve for x
    x = 18,706,770,397.96/155,280.79
  6. Step 6: Final answer
    x = 120,470.60

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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.