Home / 138,942.28-191,740.26-75,281.32

Finding the Fourth Proportional to 138,942.28, 191,740.26 and 75,281.32

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Solution

The fourth proportional to 138,942.28, 191,740.26 and 75,281.32 is: 103,888.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,942.28 : 191,740.26 = 75,281.32 : x
  2. Step 2: Convert to fraction form
    138,942.28/191,740.26 = 75,281.32/x
  3. Step 3: Cross multiply
    138,942.28x = 191,740.26 × 75,281.32
  4. Step 4: Simplify right side
    138,942.28x = 14,434,459,869.94
  5. Step 5: Solve for x
    x = 14,434,459,869.94/138,942.28
  6. Step 6: Final answer
    x = 103,888.17

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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.