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Finding the Fourth Proportional to 128,097.01, 176,811.41 and 74,406.16

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Solution

The fourth proportional to 128,097.01, 176,811.41 and 74,406.16 is: 102,702.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,097.01 : 176,811.41 = 74,406.16 : x
  2. Step 2: Convert to fraction form
    128,097.01/176,811.41 = 74,406.16/x
  3. Step 3: Cross multiply
    128,097.01x = 176,811.41 × 74,406.16
  4. Step 4: Simplify right side
    128,097.01x = 13,155,856,806.20
  5. Step 5: Solve for x
    x = 13,155,856,806.20/128,097.01
  6. Step 6: Final answer
    x = 102,702.30

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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.