Home / 135,275.64-186,715.82-77,921.56

Finding the Fourth Proportional to 135,275.64, 186,715.82 and 77,921.56

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Solution

The fourth proportional to 135,275.64, 186,715.82 and 77,921.56 is: 107,552.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,275.64 : 186,715.82 = 77,921.56 : x
  2. Step 2: Convert to fraction form
    135,275.64/186,715.82 = 77,921.56/x
  3. Step 3: Cross multiply
    135,275.64x = 186,715.82 × 77,921.56
  4. Step 4: Simplify right side
    135,275.64x = 14,549,187,971.08
  5. Step 5: Solve for x
    x = 14,549,187,971.08/135,275.64
  6. Step 6: Final answer
    x = 107,552.17

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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.