Home / 230,572.13-318,188.76-128,597.72

Finding the Fourth Proportional to 230,572.13, 318,188.76 and 128,597.72

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Solution

The fourth proportional to 230,572.13, 318,188.76 and 128,597.72 is: 177,464.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,572.13 : 318,188.76 = 128,597.72 : x
  2. Step 2: Convert to fraction form
    230,572.13/318,188.76 = 128,597.72/x
  3. Step 3: Cross multiply
    230,572.13x = 318,188.76 × 128,597.72
  4. Step 4: Simplify right side
    230,572.13x = 40,918,349,065.63
  5. Step 5: Solve for x
    x = 40,918,349,065.63/230,572.13
  6. Step 6: Final answer
    x = 177,464.42

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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.