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Finding the Fourth Proportional to 139,080.68, 191,927.94 and 75,416.84

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Solution

The fourth proportional to 139,080.68, 191,927.94 and 75,416.84 is: 104,073.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,080.68 : 191,927.94 = 75,416.84 : x
  2. Step 2: Convert to fraction form
    139,080.68/191,927.94 = 75,416.84/x
  3. Step 3: Cross multiply
    139,080.68x = 191,927.94 × 75,416.84
  4. Step 4: Simplify right side
    139,080.68x = 14,474,598,742.51
  5. Step 5: Solve for x
    x = 14,474,598,742.51/139,080.68
  6. Step 6: Final answer
    x = 104,073.40

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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.