Home / 139,220.48-208,856.80-45,731.52

Finding the Fourth Proportional to 139,220.48, 208,856.80 and 45,731.52

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Solution

The fourth proportional to 139,220.48, 208,856.80 and 45,731.52 is: 68,605.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,220.48 : 208,856.80 = 45,731.52 : x
  2. Step 2: Convert to fraction form
    139,220.48/208,856.80 = 45,731.52/x
  3. Step 3: Cross multiply
    139,220.48x = 208,856.80 × 45,731.52
  4. Step 4: Simplify right side
    139,220.48x = 9,551,338,926.34
  5. Step 5: Solve for x
    x = 9,551,338,926.34/139,220.48
  6. Step 6: Final answer
    x = 68,605.85

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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.