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Finding the Fourth Proportional to 138,383.58, 207,575.34 and 99,017.58

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Solution

The fourth proportional to 138,383.58, 207,575.34 and 99,017.58 is: 148,526.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,383.58 : 207,575.34 = 99,017.58 : x
  2. Step 2: Convert to fraction form
    138,383.58/207,575.34 = 99,017.58/x
  3. Step 3: Cross multiply
    138,383.58x = 207,575.34 × 99,017.58
  4. Step 4: Simplify right side
    138,383.58x = 20,553,607,834.48
  5. Step 5: Solve for x
    x = 20,553,607,834.48/138,383.58
  6. Step 6: Final answer
    x = 148,526.35

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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.