Home / 128,041.47-176,696.22-74,331.48

Finding the Fourth Proportional to 128,041.47, 176,696.22 and 74,331.48

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Solution

The fourth proportional to 128,041.47, 176,696.22 and 74,331.48 is: 102,576.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,041.47 : 176,696.22 = 74,331.48 : x
  2. Step 2: Convert to fraction form
    128,041.47/176,696.22 = 74,331.48/x
  3. Step 3: Cross multiply
    128,041.47x = 176,696.22 × 74,331.48
  4. Step 4: Simplify right side
    128,041.47x = 13,134,091,543.01
  5. Step 5: Solve for x
    x = 13,134,091,543.01/128,041.47
  6. Step 6: Final answer
    x = 102,576.86

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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.