Home / 155,278.29-214,279.05-87,298.12

Finding the Fourth Proportional to 155,278.29, 214,279.05 and 87,298.12

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Solution

The fourth proportional to 155,278.29, 214,279.05 and 87,298.12 is: 120,468.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,278.29 : 214,279.05 = 87,298.12 : x
  2. Step 2: Convert to fraction form
    155,278.29/214,279.05 = 87,298.12/x
  3. Step 3: Cross multiply
    155,278.29x = 214,279.05 × 87,298.12
  4. Step 4: Simplify right side
    155,278.29x = 18,706,158,815.60
  5. Step 5: Solve for x
    x = 18,706,158,815.60/155,278.29
  6. Step 6: Final answer
    x = 120,468.60

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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.