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Finding the Fourth Proportional to 99,798.76, 137,717.22 and 55,078.12

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Solution

The fourth proportional to 99,798.76, 137,717.22 and 55,078.12 is: 76,005.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,798.76 : 137,717.22 = 55,078.12 : x
  2. Step 2: Convert to fraction form
    99,798.76/137,717.22 = 55,078.12/x
  3. Step 3: Cross multiply
    99,798.76x = 137,717.22 × 55,078.12
  4. Step 4: Simplify right side
    99,798.76x = 7,585,205,569.23
  5. Step 5: Solve for x
    x = 7,585,205,569.23/99,798.76
  6. Step 6: Final answer
    x = 76,005.01

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1.5x scale

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.