Home / 134,631.88-185,788.02-77,279.56

Finding the Fourth Proportional to 134,631.88, 185,788.02 and 77,279.56

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Solution

The fourth proportional to 134,631.88, 185,788.02 and 77,279.56 is: 106,643.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,631.88 : 185,788.02 = 77,279.56 : x
  2. Step 2: Convert to fraction form
    134,631.88/185,788.02 = 77,279.56/x
  3. Step 3: Cross multiply
    134,631.88x = 185,788.02 × 77,279.56
  4. Step 4: Simplify right side
    134,631.88x = 14,357,616,438.87
  5. Step 5: Solve for x
    x = 14,357,616,438.87/134,631.88
  6. Step 6: Final answer
    x = 106,643.51

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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.