Home / 128,787.76-193,180.69-40,041.10

Finding the Fourth Proportional to 128,787.76, 193,180.69 and 40,041.10

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Solution

The fourth proportional to 128,787.76, 193,180.69 and 40,041.10 is: 60,061.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,787.76 : 193,180.69 = 40,041.10 : x
  2. Step 2: Convert to fraction form
    128,787.76/193,180.69 = 40,041.10/x
  3. Step 3: Cross multiply
    128,787.76x = 193,180.69 × 40,041.10
  4. Step 4: Simplify right side
    128,787.76x = 7,735,167,326.36
  5. Step 5: Solve for x
    x = 7,735,167,326.36/128,787.76
  6. Step 6: Final answer
    x = 60,061.35

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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.