Home / 138,960.95-208,453.73-39,122.01

Finding the Fourth Proportional to 138,960.95, 208,453.73 and 39,122.01

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Solution

The fourth proportional to 138,960.95, 208,453.73 and 39,122.01 is: 58,686.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,960.95 : 208,453.73 = 39,122.01 : x
  2. Step 2: Convert to fraction form
    138,960.95/208,453.73 = 39,122.01/x
  3. Step 3: Cross multiply
    138,960.95x = 208,453.73 × 39,122.01
  4. Step 4: Simplify right side
    138,960.95x = 8,155,129,657.86
  5. Step 5: Solve for x
    x = 8,155,129,657.86/138,960.95
  6. Step 6: Final answer
    x = 58,686.48

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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.