Home / 98,639.70-136,120.02-55,618.80

Finding the Fourth Proportional to 98,639.70, 136,120.02 and 55,618.80

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Solution

The fourth proportional to 98,639.70, 136,120.02 and 55,618.80 is: 76,752.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,639.70 : 136,120.02 = 55,618.80 : x
  2. Step 2: Convert to fraction form
    98,639.70/136,120.02 = 55,618.80/x
  3. Step 3: Cross multiply
    98,639.70x = 136,120.02 × 55,618.80
  4. Step 4: Simplify right side
    98,639.70x = 7,570,832,168.38
  5. Step 5: Solve for x
    x = 7,570,832,168.38/98,639.70
  6. Step 6: Final answer
    x = 76,752.38

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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.