Home / 144,025.30-215,600.55-128,278.90

Finding the Fourth Proportional to 144,025.30, 215,600.55 and 128,278.90

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Solution

The fourth proportional to 144,025.30, 215,600.55 and 128,278.90 is: 192,028.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,025.30 : 215,600.55 = 128,278.90 : x
  2. Step 2: Convert to fraction form
    144,025.30/215,600.55 = 128,278.90/x
  3. Step 3: Cross multiply
    144,025.30x = 215,600.55 × 128,278.90
  4. Step 4: Simplify right side
    144,025.30x = 27,657,001,393.40
  5. Step 5: Solve for x
    x = 27,657,001,393.40/144,025.30
  6. Step 6: Final answer
    x = 192,028.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.