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Finding the Fourth Proportional to 107,047.72, 147,774.66 and 76,443.88

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Solution

The fourth proportional to 107,047.72, 147,774.66 and 76,443.88 is: 105,527.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,047.72 : 147,774.66 = 76,443.88 : x
  2. Step 2: Convert to fraction form
    107,047.72/147,774.66 = 76,443.88/x
  3. Step 3: Cross multiply
    107,047.72x = 147,774.66 × 76,443.88
  4. Step 4: Simplify right side
    107,047.72x = 11,296,468,376.08
  5. Step 5: Solve for x
    x = 11,296,468,376.08/107,047.72
  6. Step 6: Final answer
    x = 105,527.41

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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.