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Finding the Fourth Proportional to 125,052.67, 172,415.60 and 99,498.79

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Solution

The fourth proportional to 125,052.67, 172,415.60 and 99,498.79 is: 137,183.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,052.67 : 172,415.60 = 99,498.79 : x
  2. Step 2: Convert to fraction form
    125,052.67/172,415.60 = 99,498.79/x
  3. Step 3: Cross multiply
    125,052.67x = 172,415.60 × 99,498.79
  4. Step 4: Simplify right side
    125,052.67x = 17,155,142,715.05
  5. Step 5: Solve for x
    x = 17,155,142,715.05/125,052.67
  6. Step 6: Final answer
    x = 137,183.34

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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.