Home / 135,410.99-186,869.13-74,981.51

Finding the Fourth Proportional to 135,410.99, 186,869.13 and 74,981.51

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Solution

The fourth proportional to 135,410.99, 186,869.13 and 74,981.51 is: 103,475.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,410.99 : 186,869.13 = 74,981.51 : x
  2. Step 2: Convert to fraction form
    135,410.99/186,869.13 = 74,981.51/x
  3. Step 3: Cross multiply
    135,410.99x = 186,869.13 × 74,981.51
  4. Step 4: Simplify right side
    135,410.99x = 14,011,728,605.44
  5. Step 5: Solve for x
    x = 14,011,728,605.44/135,410.99
  6. Step 6: Final answer
    x = 103,475.57

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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.