Home / 128,166.38-176,842.55-74,423.59

Finding the Fourth Proportional to 128,166.38, 176,842.55 and 74,423.59

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Solution

The fourth proportional to 128,166.38, 176,842.55 and 74,423.59 is: 102,688.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,166.38 : 176,842.55 = 74,423.59 : x
  2. Step 2: Convert to fraction form
    128,166.38/176,842.55 = 74,423.59/x
  3. Step 3: Cross multiply
    128,166.38x = 176,842.55 × 74,423.59
  4. Step 4: Simplify right side
    128,166.38x = 13,161,257,179.71
  5. Step 5: Solve for x
    x = 13,161,257,179.71/128,166.38
  6. Step 6: Final answer
    x = 102,688.84

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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.