Home / 115,107.31-158,848.37-66,718.59

Finding the Fourth Proportional to 115,107.31, 158,848.37 and 66,718.59

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Solution

The fourth proportional to 115,107.31, 158,848.37 and 66,718.59 is: 92,071.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,107.31 : 158,848.37 = 66,718.59 : x
  2. Step 2: Convert to fraction form
    115,107.31/158,848.37 = 66,718.59/x
  3. Step 3: Cross multiply
    115,107.31x = 158,848.37 × 66,718.59
  4. Step 4: Simplify right side
    115,107.31x = 10,598,139,270.20
  5. Step 5: Solve for x
    x = 10,598,139,270.20/115,107.31
  6. Step 6: Final answer
    x = 92,071.82

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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.