Home / 128,146.24-176,752.80-117,570.88

Finding the Fourth Proportional to 128,146.24, 176,752.80 and 117,570.88

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Solution

The fourth proportional to 128,146.24, 176,752.80 and 117,570.88 is: 162,166.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,146.24 : 176,752.80 = 117,570.88 : x
  2. Step 2: Convert to fraction form
    128,146.24/176,752.80 = 117,570.88/x
  3. Step 3: Cross multiply
    128,146.24x = 176,752.80 × 117,570.88
  4. Step 4: Simplify right side
    128,146.24x = 20,780,982,238.46
  5. Step 5: Solve for x
    x = 20,780,982,238.46/128,146.24
  6. Step 6: Final answer
    x = 162,166.15

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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.