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Finding the Fourth Proportional to 101,062.15, 139,387.03 and 65,260.96

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Solution

The fourth proportional to 101,062.15, 139,387.03 and 65,260.96 is: 90,009.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,062.15 : 139,387.03 = 65,260.96 : x
  2. Step 2: Convert to fraction form
    101,062.15/139,387.03 = 65,260.96/x
  3. Step 3: Cross multiply
    101,062.15x = 139,387.03 × 65,260.96
  4. Step 4: Simplify right side
    101,062.15x = 9,096,531,389.35
  5. Step 5: Solve for x
    x = 9,096,531,389.35/101,062.15
  6. Step 6: Final answer
    x = 90,009.28

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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.