Home / 100,270.52-138,373.34-59,985.96

Finding the Fourth Proportional to 100,270.52, 138,373.34 and 59,985.96

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Solution

The fourth proportional to 100,270.52, 138,373.34 and 59,985.96 is: 82,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,270.52 : 138,373.34 = 59,985.96 : x
  2. Step 2: Convert to fraction form
    100,270.52/138,373.34 = 59,985.96/x
  3. Step 3: Cross multiply
    100,270.52x = 138,373.34 × 59,985.96
  4. Step 4: Simplify right side
    100,270.52x = 8,300,457,638.31
  5. Step 5: Solve for x
    x = 8,300,457,638.31/100,270.52
  6. Step 6: Final answer
    x = 82,780.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.