Home / 134,875.68-186,138.60-78,295.56

Finding the Fourth Proportional to 134,875.68, 186,138.60 and 78,295.56

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Solution

The fourth proportional to 134,875.68, 186,138.60 and 78,295.56 is: 108,053.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,875.68 : 186,138.60 = 78,295.56 : x
  2. Step 2: Convert to fraction form
    134,875.68/186,138.60 = 78,295.56/x
  3. Step 3: Cross multiply
    134,875.68x = 186,138.60 × 78,295.56
  4. Step 4: Simplify right side
    134,875.68x = 14,573,825,924.62
  5. Step 5: Solve for x
    x = 14,573,825,924.62/134,875.68
  6. Step 6: Final answer
    x = 108,053.77

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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.