Home / 145,148.10-217,430.55-82,745.70

Finding the Fourth Proportional to 145,148.10, 217,430.55 and 82,745.70

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Solution

The fourth proportional to 145,148.10, 217,430.55 and 82,745.70 is: 123,952.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,148.10 : 217,430.55 = 82,745.70 : x
  2. Step 2: Convert to fraction form
    145,148.10/217,430.55 = 82,745.70/x
  3. Step 3: Cross multiply
    145,148.10x = 217,430.55 × 82,745.70
  4. Step 4: Simplify right side
    145,148.10x = 17,991,443,061.14
  5. Step 5: Solve for x
    x = 17,991,443,061.14/145,148.10
  6. Step 6: Final answer
    x = 123,952.32

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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.