Home / 158,745.42-219,071.43-87,132.15

Finding the Fourth Proportional to 158,745.42, 219,071.43 and 87,132.15

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Solution

The fourth proportional to 158,745.42, 219,071.43 and 87,132.15 is: 120,243.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,745.42 : 219,071.43 = 87,132.15 : x
  2. Step 2: Convert to fraction form
    158,745.42/219,071.43 = 87,132.15/x
  3. Step 3: Cross multiply
    158,745.42x = 219,071.43 × 87,132.15
  4. Step 4: Simplify right side
    158,745.42x = 19,088,164,699.47
  5. Step 5: Solve for x
    x = 19,088,164,699.47/158,745.42
  6. Step 6: Final answer
    x = 120,243.88

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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.