Home / 139,775.04-192,882.96-76,112.64

Finding the Fourth Proportional to 139,775.04, 192,882.96 and 76,112.64

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Solution

The fourth proportional to 139,775.04, 192,882.96 and 76,112.64 is: 105,031.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,775.04 : 192,882.96 = 76,112.64 : x
  2. Step 2: Convert to fraction form
    139,775.04/192,882.96 = 76,112.64/x
  3. Step 3: Cross multiply
    139,775.04x = 192,882.96 × 76,112.64
  4. Step 4: Simplify right side
    139,775.04x = 14,680,831,296.61
  5. Step 5: Solve for x
    x = 14,680,831,296.61/139,775.04
  6. Step 6: Final answer
    x = 105,031.85

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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.