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Finding the Fourth Proportional to 101,299.55, 139,792.84 and 55,980.68

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Solution

The fourth proportional to 101,299.55, 139,792.84 and 55,980.68 is: 77,253.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,299.55 : 139,792.84 = 55,980.68 : x
  2. Step 2: Convert to fraction form
    101,299.55/139,792.84 = 55,980.68/x
  3. Step 3: Cross multiply
    101,299.55x = 139,792.84 × 55,980.68
  4. Step 4: Simplify right side
    101,299.55x = 7,825,697,403.42
  5. Step 5: Solve for x
    x = 7,825,697,403.42/101,299.55
  6. Step 6: Final answer
    x = 77,253.04

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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.