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Finding the Fourth Proportional to 128,064.64, 176,723.52 and 74,345.44

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Solution

The fourth proportional to 128,064.64, 176,723.52 and 74,345.44 is: 102,593.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,064.64 : 176,723.52 = 74,345.44 : x
  2. Step 2: Convert to fraction form
    128,064.64/176,723.52 = 74,345.44/x
  3. Step 3: Cross multiply
    128,064.64x = 176,723.52 × 74,345.44
  4. Step 4: Simplify right side
    128,064.64x = 13,138,587,852.75
  5. Step 5: Solve for x
    x = 13,138,587,852.75/128,064.64
  6. Step 6: Final answer
    x = 102,593.41

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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.