Home / 135,166.08-186,528.06-77,816.64

Finding the Fourth Proportional to 135,166.08, 186,528.06 and 77,816.64

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Solution

The fourth proportional to 135,166.08, 186,528.06 and 77,816.64 is: 107,386.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,166.08 : 186,528.06 = 77,816.64 : x
  2. Step 2: Convert to fraction form
    135,166.08/186,528.06 = 77,816.64/x
  3. Step 3: Cross multiply
    135,166.08x = 186,528.06 × 77,816.64
  4. Step 4: Simplify right side
    135,166.08x = 14,514,986,894.92
  5. Step 5: Solve for x
    x = 14,514,986,894.92/135,166.08
  6. Step 6: Final answer
    x = 107,386.31

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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.