Home / 92,719.32-139,192.52-61,155.78

Finding the Fourth Proportional to 92,719.32, 139,192.52 and 61,155.78

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Solution

The fourth proportional to 92,719.32, 139,192.52 and 61,155.78 is: 91,808.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,719.32 : 139,192.52 = 61,155.78 : x
  2. Step 2: Convert to fraction form
    92,719.32/139,192.52 = 61,155.78/x
  3. Step 3: Cross multiply
    92,719.32x = 139,192.52 × 61,155.78
  4. Step 4: Simplify right side
    92,719.32x = 8,512,426,824.99
  5. Step 5: Solve for x
    x = 8,512,426,824.99/92,719.32
  6. Step 6: Final answer
    x = 91,808.56

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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.