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Finding the Fourth Proportional to 145,208.84, 217,805.42 and 45,357.57

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Solution

The fourth proportional to 145,208.84, 217,805.42 and 45,357.57 is: 68,033.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,208.84 : 217,805.42 = 45,357.57 : x
  2. Step 2: Convert to fraction form
    145,208.84/217,805.42 = 45,357.57/x
  3. Step 3: Cross multiply
    145,208.84x = 217,805.42 × 45,357.57
  4. Step 4: Simplify right side
    145,208.84x = 9,879,124,697.42
  5. Step 5: Solve for x
    x = 9,879,124,697.42/145,208.84
  6. Step 6: Final answer
    x = 68,033.91

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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.