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Finding the Fourth Proportional to 138,751.52, 208,090.80 and 59,848.20

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Solution

The fourth proportional to 138,751.52, 208,090.80 and 59,848.20 is: 89,756.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,751.52 : 208,090.80 = 59,848.20 : x
  2. Step 2: Convert to fraction form
    138,751.52/208,090.80 = 59,848.20/x
  3. Step 3: Cross multiply
    138,751.52x = 208,090.80 × 59,848.20
  4. Step 4: Simplify right side
    138,751.52x = 12,453,859,816.56
  5. Step 5: Solve for x
    x = 12,453,859,816.56/138,751.52
  6. Step 6: Final answer
    x = 89,756.57

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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.