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Finding the Fourth Proportional to 99,995.60, 149,820.60 and 84,443.60

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Solution

The fourth proportional to 99,995.60, 149,820.60 and 84,443.60 is: 126,519.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,995.60 : 149,820.60 = 84,443.60 : x
  2. Step 2: Convert to fraction form
    99,995.60/149,820.60 = 84,443.60/x
  3. Step 3: Cross multiply
    99,995.60x = 149,820.60 × 84,443.60
  4. Step 4: Simplify right side
    99,995.60x = 12,651,390,818.16
  5. Step 5: Solve for x
    x = 12,651,390,818.16/99,995.60
  6. Step 6: Final answer
    x = 126,519.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.