Home / 145,421.78-218,137.55-40,231.94

Finding the Fourth Proportional to 145,421.78, 218,137.55 and 40,231.94

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Solution

The fourth proportional to 145,421.78, 218,137.55 and 40,231.94 is: 60,349.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,421.78 : 218,137.55 = 40,231.94 : x
  2. Step 2: Convert to fraction form
    145,421.78/218,137.55 = 40,231.94/x
  3. Step 3: Cross multiply
    145,421.78x = 218,137.55 × 40,231.94
  4. Step 4: Simplify right side
    145,421.78x = 8,776,095,531.50
  5. Step 5: Solve for x
    x = 8,776,095,531.50/145,421.78
  6. Step 6: Final answer
    x = 60,349.25

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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.