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Finding the Fourth Proportional to 145,506.96, 218,377.08 and 75,406.32

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Solution

The fourth proportional to 145,506.96, 218,377.08 and 75,406.32 is: 113,169.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,506.96 : 218,377.08 = 75,406.32 : x
  2. Step 2: Convert to fraction form
    145,506.96/218,377.08 = 75,406.32/x
  3. Step 3: Cross multiply
    145,506.96x = 218,377.08 × 75,406.32
  4. Step 4: Simplify right side
    145,506.96x = 16,467,011,975.15
  5. Step 5: Solve for x
    x = 16,467,011,975.15/145,506.96
  6. Step 6: Final answer
    x = 113,169.93

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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.