Home / 158,761.53-219,090.14-87,142.77

Finding the Fourth Proportional to 158,761.53, 219,090.14 and 87,142.77

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Solution

The fourth proportional to 158,761.53, 219,090.14 and 87,142.77 is: 120,256.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,761.53 : 219,090.14 = 87,142.77 : x
  2. Step 2: Convert to fraction form
    158,761.53/219,090.14 = 87,142.77/x
  3. Step 3: Cross multiply
    158,761.53x = 219,090.14 × 87,142.77
  4. Step 4: Simplify right side
    158,761.53x = 19,092,120,148.12
  5. Step 5: Solve for x
    x = 19,092,120,148.12/158,761.53
  6. Step 6: Final answer
    x = 120,256.59

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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.