Home / 128,007.04-176,576.27-74,285.21

Finding the Fourth Proportional to 128,007.04, 176,576.27 and 74,285.21

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Solution

The fourth proportional to 128,007.04, 176,576.27 and 74,285.21 is: 102,470.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,007.04 : 176,576.27 = 74,285.21 : x
  2. Step 2: Convert to fraction form
    128,007.04/176,576.27 = 74,285.21/x
  3. Step 3: Cross multiply
    128,007.04x = 176,576.27 × 74,285.21
  4. Step 4: Simplify right side
    128,007.04x = 13,117,004,043.66
  5. Step 5: Solve for x
    x = 13,117,004,043.66/128,007.04
  6. Step 6: Final answer
    x = 102,470.96

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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.