Home / 98,919.78-136,556.62-56,470.12

Finding the Fourth Proportional to 98,919.78, 136,556.62 and 56,470.12

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Solution

The fourth proportional to 98,919.78, 136,556.62 and 56,470.12 is: 77,955.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,919.78 : 136,556.62 = 56,470.12 : x
  2. Step 2: Convert to fraction form
    98,919.78/136,556.62 = 56,470.12/x
  3. Step 3: Cross multiply
    98,919.78x = 136,556.62 × 56,470.12
  4. Step 4: Simplify right side
    98,919.78x = 7,711,368,718.19
  5. Step 5: Solve for x
    x = 7,711,368,718.19/98,919.78
  6. Step 6: Final answer
    x = 77,955.78

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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.