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Finding the Fourth Proportional to 98,693.80, 136,200.96 and 56,245.48

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Solution

The fourth proportional to 98,693.80, 136,200.96 and 56,245.48 is: 77,620.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,693.80 : 136,200.96 = 56,245.48 : x
  2. Step 2: Convert to fraction form
    98,693.80/136,200.96 = 56,245.48/x
  3. Step 3: Cross multiply
    98,693.80x = 136,200.96 × 56,245.48
  4. Step 4: Simplify right side
    98,693.80x = 7,660,688,371.66
  5. Step 5: Solve for x
    x = 7,660,688,371.66/98,693.80
  6. Step 6: Final answer
    x = 77,620.77

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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.