Home / 138,643.26-191,327.70-74,981.04

Finding the Fourth Proportional to 138,643.26, 191,327.70 and 74,981.04

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Solution

The fourth proportional to 138,643.26, 191,327.70 and 74,981.04 is: 103,473.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,643.26 : 191,327.70 = 74,981.04 : x
  2. Step 2: Convert to fraction form
    138,643.26/191,327.70 = 74,981.04/x
  3. Step 3: Cross multiply
    138,643.26x = 191,327.70 × 74,981.04
  4. Step 4: Simplify right side
    138,643.26x = 14,345,949,926.81
  5. Step 5: Solve for x
    x = 14,345,949,926.81/138,643.26
  6. Step 6: Final answer
    x = 103,473.84

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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.