Home / 145,239.40-217,815.90-56,441.80

Finding the Fourth Proportional to 145,239.40, 217,815.90 and 56,441.80

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Solution

The fourth proportional to 145,239.40, 217,815.90 and 56,441.80 is: 84,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,239.40 : 217,815.90 = 56,441.80 : x
  2. Step 2: Convert to fraction form
    145,239.40/217,815.90 = 56,441.80/x
  3. Step 3: Cross multiply
    145,239.40x = 217,815.90 × 56,441.80
  4. Step 4: Simplify right side
    145,239.40x = 12,293,921,464.62
  5. Step 5: Solve for x
    x = 12,293,921,464.62/145,239.40
  6. Step 6: Final answer
    x = 84,645.91

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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.