Home / 128,541.52-177,389.15-74,063.62

Finding the Fourth Proportional to 128,541.52, 177,389.15 and 74,063.62

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Solution

The fourth proportional to 128,541.52, 177,389.15 and 74,063.62 is: 102,208.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,541.52 : 177,389.15 = 74,063.62 : x
  2. Step 2: Convert to fraction form
    128,541.52/177,389.15 = 74,063.62/x
  3. Step 3: Cross multiply
    128,541.52x = 177,389.15 × 74,063.62
  4. Step 4: Simplify right side
    128,541.52x = 13,138,082,597.72
  5. Step 5: Solve for x
    x = 13,138,082,597.72/128,541.52
  6. Step 6: Final answer
    x = 102,208.86

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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.