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Finding the Fourth Proportional to 100,395.37, 138,473.30 and 64,551.13

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Solution

The fourth proportional to 100,395.37, 138,473.30 and 64,551.13 is: 89,034.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,395.37 : 138,473.30 = 64,551.13 : x
  2. Step 2: Convert to fraction form
    100,395.37/138,473.30 = 64,551.13/x
  3. Step 3: Cross multiply
    100,395.37x = 138,473.30 × 64,551.13
  4. Step 4: Simplify right side
    100,395.37x = 8,938,607,441.92
  5. Step 5: Solve for x
    x = 8,938,607,441.92/100,395.37
  6. Step 6: Final answer
    x = 89,034.06

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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.