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Finding the Fourth Proportional to 109,700.64, 151,383.84 and 64,988.64

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Solution

The fourth proportional to 109,700.64, 151,383.84 and 64,988.64 is: 89,682.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,700.64 : 151,383.84 = 64,988.64 : x
  2. Step 2: Convert to fraction form
    109,700.64/151,383.84 = 64,988.64/x
  3. Step 3: Cross multiply
    109,700.64x = 151,383.84 × 64,988.64
  4. Step 4: Simplify right side
    109,700.64x = 9,838,229,879.58
  5. Step 5: Solve for x
    x = 9,838,229,879.58/109,700.64
  6. Step 6: Final answer
    x = 89,682.52

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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.