Home / 147,403.80-221,105.70-40,787.55

Finding the Fourth Proportional to 147,403.80, 221,105.70 and 40,787.55

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Solution

The fourth proportional to 147,403.80, 221,105.70 and 40,787.55 is: 61,181.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,403.80 : 221,105.70 = 40,787.55 : x
  2. Step 2: Convert to fraction form
    147,403.80/221,105.70 = 40,787.55/x
  3. Step 3: Cross multiply
    147,403.80x = 221,105.70 × 40,787.55
  4. Step 4: Simplify right side
    147,403.80x = 9,018,359,794.04
  5. Step 5: Solve for x
    x = 9,018,359,794.04/147,403.80
  6. Step 6: Final answer
    x = 61,181.33

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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.