Home / 103,308.08-155,045.14-53,402.78

Finding the Fourth Proportional to 103,308.08, 155,045.14 and 53,402.78

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Solution

The fourth proportional to 103,308.08, 155,045.14 and 53,402.78 is: 80,147.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,308.08 : 155,045.14 = 53,402.78 : x
  2. Step 2: Convert to fraction form
    103,308.08/155,045.14 = 53,402.78/x
  3. Step 3: Cross multiply
    103,308.08x = 155,045.14 × 53,402.78
  4. Step 4: Simplify right side
    103,308.08x = 8,279,841,501.49
  5. Step 5: Solve for x
    x = 8,279,841,501.49/103,308.08
  6. Step 6: Final answer
    x = 80,147.09

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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.