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Finding the Fourth Proportional to 101,165.54, 139,583.95 and 64,850.40

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Solution

The fourth proportional to 101,165.54, 139,583.95 and 64,850.40 is: 89,477.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,165.54 : 139,583.95 = 64,850.40 : x
  2. Step 2: Convert to fraction form
    101,165.54/139,583.95 = 64,850.40/x
  3. Step 3: Cross multiply
    101,165.54x = 139,583.95 × 64,850.40
  4. Step 4: Simplify right side
    101,165.54x = 9,052,074,828.95
  5. Step 5: Solve for x
    x = 9,052,074,828.95/101,165.54
  6. Step 6: Final answer
    x = 89,477.85

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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.