Home / 138,728.16-208,101.63-48,759.93

Finding the Fourth Proportional to 138,728.16, 208,101.63 and 48,759.93

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Solution

The fourth proportional to 138,728.16, 208,101.63 and 48,759.93 is: 73,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,728.16 : 208,101.63 = 48,759.93 : x
  2. Step 2: Convert to fraction form
    138,728.16/208,101.63 = 48,759.93/x
  3. Step 3: Cross multiply
    138,728.16x = 208,101.63 × 48,759.93
  4. Step 4: Simplify right side
    138,728.16x = 10,147,020,911.69
  5. Step 5: Solve for x
    x = 10,147,020,911.69/138,728.16
  6. Step 6: Final answer
    x = 73,143.20

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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.