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Finding the Fourth Proportional to 101,069.67, 139,458.75 and 64,802.84

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Solution

The fourth proportional to 101,069.67, 139,458.75 and 64,802.84 is: 89,416.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,069.67 : 139,458.75 = 64,802.84 : x
  2. Step 2: Convert to fraction form
    101,069.67/139,458.75 = 64,802.84/x
  3. Step 3: Cross multiply
    101,069.67x = 139,458.75 × 64,802.84
  4. Step 4: Simplify right side
    101,069.67x = 9,037,322,122.55
  5. Step 5: Solve for x
    x = 9,037,322,122.55/101,069.67
  6. Step 6: Final answer
    x = 89,416.75

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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.