Home / 139,772.15-192,885.80-76,110.20

Finding the Fourth Proportional to 139,772.15, 192,885.80 and 76,110.20

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Solution

The fourth proportional to 139,772.15, 192,885.80 and 76,110.20 is: 105,032.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,772.15 : 192,885.80 = 76,110.20 : x
  2. Step 2: Convert to fraction form
    139,772.15/192,885.80 = 76,110.20/x
  3. Step 3: Cross multiply
    139,772.15x = 192,885.80 × 76,110.20
  4. Step 4: Simplify right side
    139,772.15x = 14,680,576,815.16
  5. Step 5: Solve for x
    x = 14,680,576,815.16/139,772.15
  6. Step 6: Final answer
    x = 105,032.20

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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.