Home / 145,133.86-217,767.75-66,272.26

Finding the Fourth Proportional to 145,133.86, 217,767.75 and 66,272.26

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Solution

The fourth proportional to 145,133.86, 217,767.75 and 66,272.26 is: 99,438.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,133.86 : 217,767.75 = 66,272.26 : x
  2. Step 2: Convert to fraction form
    145,133.86/217,767.75 = 66,272.26/x
  3. Step 3: Cross multiply
    145,133.86x = 217,767.75 × 66,272.26
  4. Step 4: Simplify right side
    145,133.86x = 14,431,960,947.62
  5. Step 5: Solve for x
    x = 14,431,960,947.62/145,133.86
  6. Step 6: Final answer
    x = 99,438.97

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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.