Home / 115,117.84-158,862.87-66,729.10

Finding the Fourth Proportional to 115,117.84, 158,862.87 and 66,729.10

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Solution

The fourth proportional to 115,117.84, 158,862.87 and 66,729.10 is: 92,086.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,117.84 : 158,862.87 = 66,729.10 : x
  2. Step 2: Convert to fraction form
    115,117.84/158,862.87 = 66,729.10/x
  3. Step 3: Cross multiply
    115,117.84x = 158,862.87 × 66,729.10
  4. Step 4: Simplify right side
    115,117.84x = 10,600,776,239.23
  5. Step 5: Solve for x
    x = 10,600,776,239.23/115,117.84
  6. Step 6: Final answer
    x = 92,086.30

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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.