Home / 145,132.86-217,766.25-66,271.26

Finding the Fourth Proportional to 145,132.86, 217,766.25 and 66,271.26

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Solution

The fourth proportional to 145,132.86, 217,766.25 and 66,271.26 is: 99,437.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,132.86 : 217,766.25 = 66,271.26 : x
  2. Step 2: Convert to fraction form
    145,132.86/217,766.25 = 66,271.26/x
  3. Step 3: Cross multiply
    145,132.86x = 217,766.25 × 66,271.26
  4. Step 4: Simplify right side
    145,132.86x = 14,431,643,772.98
  5. Step 5: Solve for x
    x = 14,431,643,772.98/145,132.86
  6. Step 6: Final answer
    x = 99,437.47

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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.