Home / 128,275.04-176,969.40-74,550.44

Finding the Fourth Proportional to 128,275.04, 176,969.40 and 74,550.44

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Solution

The fourth proportional to 128,275.04, 176,969.40 and 74,550.44 is: 102,850.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,275.04 : 176,969.40 = 74,550.44 : x
  2. Step 2: Convert to fraction form
    128,275.04/176,969.40 = 74,550.44/x
  3. Step 3: Cross multiply
    128,275.04x = 176,969.40 × 74,550.44
  4. Step 4: Simplify right side
    128,275.04x = 13,193,146,636.54
  5. Step 5: Solve for x
    x = 13,193,146,636.54/128,275.04
  6. Step 6: Final answer
    x = 102,850.46

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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.