Home / 128,014.68-176,670.24-71,434.56

Finding the Fourth Proportional to 128,014.68, 176,670.24 and 71,434.56

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Solution

The fourth proportional to 128,014.68, 176,670.24 and 71,434.56 is: 98,585.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,014.68 : 176,670.24 = 71,434.56 : x
  2. Step 2: Convert to fraction form
    128,014.68/176,670.24 = 71,434.56/x
  3. Step 3: Cross multiply
    128,014.68x = 176,670.24 × 71,434.56
  4. Step 4: Simplify right side
    128,014.68x = 12,620,360,859.49
  5. Step 5: Solve for x
    x = 12,620,360,859.49/128,014.68
  6. Step 6: Final answer
    x = 98,585.26

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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.