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Finding the Fourth Proportional to 101,204.39, 139,663.80 and 65,456.69

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Solution

The fourth proportional to 101,204.39, 139,663.80 and 65,456.69 is: 90,331.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,204.39 : 139,663.80 = 65,456.69 : x
  2. Step 2: Convert to fraction form
    101,204.39/139,663.80 = 65,456.69/x
  3. Step 3: Cross multiply
    101,204.39x = 139,663.80 × 65,456.69
  4. Step 4: Simplify right side
    101,204.39x = 9,141,929,362.50
  5. Step 5: Solve for x
    x = 9,141,929,362.50/101,204.39
  6. Step 6: Final answer
    x = 90,331.35

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1.5x scale

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.