Home / 230,135.20-317,557.20-129,513.76

Finding the Fourth Proportional to 230,135.20, 317,557.20 and 129,513.76

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Solution

The fourth proportional to 230,135.20, 317,557.20 and 129,513.76 is: 178,712.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,135.20 : 317,557.20 = 129,513.76 : x
  2. Step 2: Convert to fraction form
    230,135.20/317,557.20 = 129,513.76/x
  3. Step 3: Cross multiply
    230,135.20x = 317,557.20 × 129,513.76
  4. Step 4: Simplify right side
    230,135.20x = 41,128,026,987.07
  5. Step 5: Solve for x
    x = 41,128,026,987.07/230,135.20
  6. Step 6: Final answer
    x = 178,712.46

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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.