Home / 139,815.72-192,948.48-76,156.20

Finding the Fourth Proportional to 139,815.72, 192,948.48 and 76,156.20

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Solution

The fourth proportional to 139,815.72, 192,948.48 and 76,156.20 is: 105,097.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,815.72 : 192,948.48 = 76,156.20 : x
  2. Step 2: Convert to fraction form
    139,815.72/192,948.48 = 76,156.20/x
  3. Step 3: Cross multiply
    139,815.72x = 192,948.48 × 76,156.20
  4. Step 4: Simplify right side
    139,815.72x = 14,694,223,032.58
  5. Step 5: Solve for x
    x = 14,694,223,032.58/139,815.72
  6. Step 6: Final answer
    x = 105,097.07

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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.