Home / 98,694.87-136,038.96-77,146.55

Finding the Fourth Proportional to 98,694.87, 136,038.96 and 77,146.55

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Solution

The fourth proportional to 98,694.87, 136,038.96 and 77,146.55 is: 106,337.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,694.87 : 136,038.96 = 77,146.55 : x
  2. Step 2: Convert to fraction form
    98,694.87/136,038.96 = 77,146.55/x
  3. Step 3: Cross multiply
    98,694.87x = 136,038.96 × 77,146.55
  4. Step 4: Simplify right side
    98,694.87x = 10,494,935,749.39
  5. Step 5: Solve for x
    x = 10,494,935,749.39/98,694.87
  6. Step 6: Final answer
    x = 106,337.20

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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.