Home / 155,424.89-214,471.08-87,440.40

Finding the Fourth Proportional to 155,424.89, 214,471.08 and 87,440.40

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Solution

The fourth proportional to 155,424.89, 214,471.08 and 87,440.40 is: 120,659.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,424.89 : 214,471.08 = 87,440.40 : x
  2. Step 2: Convert to fraction form
    155,424.89/214,471.08 = 87,440.40/x
  3. Step 3: Cross multiply
    155,424.89x = 214,471.08 × 87,440.40
  4. Step 4: Simplify right side
    155,424.89x = 18,753,436,599.07
  5. Step 5: Solve for x
    x = 18,753,436,599.07/155,424.89
  6. Step 6: Final answer
    x = 120,659.16

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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.