Home / 115,307.35-159,116.40-66,910.73

Finding the Fourth Proportional to 115,307.35, 159,116.40 and 66,910.73

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Solution

The fourth proportional to 115,307.35, 159,116.40 and 66,910.73 is: 92,332.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,307.35 : 159,116.40 = 66,910.73 : x
  2. Step 2: Convert to fraction form
    115,307.35/159,116.40 = 66,910.73/x
  3. Step 3: Cross multiply
    115,307.35x = 159,116.40 × 66,910.73
  4. Step 4: Simplify right side
    115,307.35x = 10,646,593,683.39
  5. Step 5: Solve for x
    x = 10,646,593,683.39/115,307.35
  6. Step 6: Final answer
    x = 92,332.31

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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.