Home / 115,121.02-158,878.38-67,371.52

Finding the Fourth Proportional to 115,121.02, 158,878.38 and 67,371.52

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Solution

The fourth proportional to 115,121.02, 158,878.38 and 67,371.52 is: 92,979.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,121.02 : 158,878.38 = 67,371.52 : x
  2. Step 2: Convert to fraction form
    115,121.02/158,878.38 = 67,371.52/x
  3. Step 3: Cross multiply
    115,121.02x = 158,878.38 × 67,371.52
  4. Step 4: Simplify right side
    115,121.02x = 10,703,877,955.74
  5. Step 5: Solve for x
    x = 10,703,877,955.74/115,121.02
  6. Step 6: Final answer
    x = 92,979.35

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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.