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Finding the Fourth Proportional to 153,597.24, 211,920.03 and 99,961.20

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Solution

The fourth proportional to 153,597.24, 211,920.03 and 99,961.20 is: 137,917.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,597.24 : 211,920.03 = 99,961.20 : x
  2. Step 2: Convert to fraction form
    153,597.24/211,920.03 = 99,961.20/x
  3. Step 3: Cross multiply
    153,597.24x = 211,920.03 × 99,961.20
  4. Step 4: Simplify right side
    153,597.24x = 21,183,780,502.84
  5. Step 5: Solve for x
    x = 21,183,780,502.84/153,597.24
  6. Step 6: Final answer
    x = 137,917.72

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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.