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Finding the Fourth Proportional to 99,967.40, 149,967.90 and 29,853.80

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Solution

The fourth proportional to 99,967.40, 149,967.90 and 29,853.80 is: 44,785.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,967.40 : 149,967.90 = 29,853.80 : x
  2. Step 2: Convert to fraction form
    99,967.40/149,967.90 = 29,853.80/x
  3. Step 3: Cross multiply
    99,967.40x = 149,967.90 × 29,853.80
  4. Step 4: Simplify right side
    99,967.40x = 4,477,111,693.02
  5. Step 5: Solve for x
    x = 4,477,111,693.02/99,967.40
  6. Step 6: Final answer
    x = 44,785.72

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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.