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Finding the Fourth Proportional to 107,903.70, 161,855.55 and 70,578.90

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Solution

The fourth proportional to 107,903.70, 161,855.55 and 70,578.90 is: 105,868.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,903.70 : 161,855.55 = 70,578.90 : x
  2. Step 2: Convert to fraction form
    107,903.70/161,855.55 = 70,578.90/x
  3. Step 3: Cross multiply
    107,903.70x = 161,855.55 × 70,578.90
  4. Step 4: Simplify right side
    107,903.70x = 11,423,586,677.90
  5. Step 5: Solve for x
    x = 11,423,586,677.90/107,903.70
  6. Step 6: Final answer
    x = 105,868.35

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Similar ratio
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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.