Home / 155,270.28-214,261.19-87,276.45

Finding the Fourth Proportional to 155,270.28, 214,261.19 and 87,276.45

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Solution

The fourth proportional to 155,270.28, 214,261.19 and 87,276.45 is: 120,434.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,270.28 : 214,261.19 = 87,276.45 : x
  2. Step 2: Convert to fraction form
    155,270.28/214,261.19 = 87,276.45/x
  3. Step 3: Cross multiply
    155,270.28x = 214,261.19 × 87,276.45
  4. Step 4: Simplify right side
    155,270.28x = 18,699,955,599.59
  5. Step 5: Solve for x
    x = 18,699,955,599.59/155,270.28
  6. Step 6: Final answer
    x = 120,434.87

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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.