Home / 115,383.64-172,740.28-67,205.35

Finding the Fourth Proportional to 115,383.64, 172,740.28 and 67,205.35

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Solution

The fourth proportional to 115,383.64, 172,740.28 and 67,205.35 is: 100,612.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,383.64 : 172,740.28 = 67,205.35 : x
  2. Step 2: Convert to fraction form
    115,383.64/172,740.28 = 67,205.35/x
  3. Step 3: Cross multiply
    115,383.64x = 172,740.28 × 67,205.35
  4. Step 4: Simplify right side
    115,383.64x = 11,609,070,178.76
  5. Step 5: Solve for x
    x = 11,609,070,178.76/115,383.64
  6. Step 6: Final answer
    x = 100,612.79

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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.