Home / 145,291.49-218,265.30-86,165.94

Finding the Fourth Proportional to 145,291.49, 218,265.30 and 86,165.94

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Solution

The fourth proportional to 145,291.49, 218,265.30 and 86,165.94 is: 129,443.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,291.49 : 218,265.30 = 86,165.94 : x
  2. Step 2: Convert to fraction form
    145,291.49/218,265.30 = 86,165.94/x
  3. Step 3: Cross multiply
    145,291.49x = 218,265.30 × 86,165.94
  4. Step 4: Simplify right side
    145,291.49x = 18,807,034,743.88
  5. Step 5: Solve for x
    x = 18,807,034,743.88/145,291.49
  6. Step 6: Final answer
    x = 129,443.47

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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.