Home / 135,412.57-186,867.05-74,981.91

Finding the Fourth Proportional to 135,412.57, 186,867.05 and 74,981.91

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Solution

The fourth proportional to 135,412.57, 186,867.05 and 74,981.91 is: 103,473.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,412.57 : 186,867.05 = 74,981.91 : x
  2. Step 2: Convert to fraction form
    135,412.57/186,867.05 = 74,981.91/x
  3. Step 3: Cross multiply
    135,412.57x = 186,867.05 × 74,981.91
  4. Step 4: Simplify right side
    135,412.57x = 14,011,648,512.52
  5. Step 5: Solve for x
    x = 14,011,648,512.52/135,412.57
  6. Step 6: Final answer
    x = 103,473.77

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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.