Home / 135,100.32-186,427.20-74,670.95

Finding the Fourth Proportional to 135,100.32, 186,427.20 and 74,670.95

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Solution

The fourth proportional to 135,100.32, 186,427.20 and 74,670.95 is: 103,039.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,100.32 : 186,427.20 = 74,670.95 : x
  2. Step 2: Convert to fraction form
    135,100.32/186,427.20 = 74,670.95/x
  3. Step 3: Cross multiply
    135,100.32x = 186,427.20 × 74,670.95
  4. Step 4: Simplify right side
    135,100.32x = 13,920,696,875.92
  5. Step 5: Solve for x
    x = 13,920,696,875.92/135,100.32
  6. Step 6: Final answer
    x = 103,039.71

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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.