Home / 155,422.40-214,474.12-87,442.25

Finding the Fourth Proportional to 155,422.40, 214,474.12 and 87,442.25

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Solution

The fourth proportional to 155,422.40, 214,474.12 and 87,442.25 is: 120,665.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,422.40 : 214,474.12 = 87,442.25 : x
  2. Step 2: Convert to fraction form
    155,422.40/214,474.12 = 87,442.25/x
  3. Step 3: Cross multiply
    155,422.40x = 214,474.12 × 87,442.25
  4. Step 4: Simplify right side
    155,422.40x = 18,754,098,328.59
  5. Step 5: Solve for x
    x = 18,754,098,328.59/155,422.40
  6. Step 6: Final answer
    x = 120,665.35

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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.