Home / 128,112.22-176,506.45-89,313.63

Finding the Fourth Proportional to 128,112.22, 176,506.45 and 89,313.63

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Solution

The fourth proportional to 128,112.22, 176,506.45 and 89,313.63 is: 123,051.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,112.22 : 176,506.45 = 89,313.63 : x
  2. Step 2: Convert to fraction form
    128,112.22/176,506.45 = 89,313.63/x
  3. Step 3: Cross multiply
    128,112.22x = 176,506.45 × 89,313.63
  4. Step 4: Simplify right side
    128,112.22x = 15,764,431,767.91
  5. Step 5: Solve for x
    x = 15,764,431,767.91/128,112.22
  6. Step 6: Final answer
    x = 123,051.74

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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.