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Finding the Fourth Proportional to 109,667.80, 164,501.70 and 91,953.10

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Solution

The fourth proportional to 109,667.80, 164,501.70 and 91,953.10 is: 137,929.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,667.80 : 164,501.70 = 91,953.10 : x
  2. Step 2: Convert to fraction form
    109,667.80/164,501.70 = 91,953.10/x
  3. Step 3: Cross multiply
    109,667.80x = 164,501.70 × 91,953.10
  4. Step 4: Simplify right side
    109,667.80x = 15,126,441,270.27
  5. Step 5: Solve for x
    x = 15,126,441,270.27/109,667.80
  6. Step 6: Final answer
    x = 137,929.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.