Home / 98,641.20-136,122.09-55,620.30

Finding the Fourth Proportional to 98,641.20, 136,122.09 and 55,620.30

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Solution

The fourth proportional to 98,641.20, 136,122.09 and 55,620.30 is: 76,754.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,641.20 : 136,122.09 = 55,620.30 : x
  2. Step 2: Convert to fraction form
    98,641.20/136,122.09 = 55,620.30/x
  3. Step 3: Cross multiply
    98,641.20x = 136,122.09 × 55,620.30
  4. Step 4: Simplify right side
    98,641.20x = 7,571,151,482.43
  5. Step 5: Solve for x
    x = 7,571,151,482.43/98,641.20
  6. Step 6: Final answer
    x = 76,754.45

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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.