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Finding the Fourth Proportional to 145,758.69, 218,754.65 and 75,658.05

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Solution

The fourth proportional to 145,758.69, 218,754.65 and 75,658.05 is: 113,547.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,758.69 : 218,754.65 = 75,658.05 : x
  2. Step 2: Convert to fraction form
    145,758.69/218,754.65 = 75,658.05/x
  3. Step 3: Cross multiply
    145,758.69x = 218,754.65 × 75,658.05
  4. Step 4: Simplify right side
    145,758.69x = 16,550,550,436.58
  5. Step 5: Solve for x
    x = 16,550,550,436.58/145,758.69
  6. Step 6: Final answer
    x = 113,547.61

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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.