Home / 149,815.72-206,756.58-86,173.48

Finding the Fourth Proportional to 149,815.72, 206,756.58 and 86,173.48

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Solution

The fourth proportional to 149,815.72, 206,756.58 and 86,173.48 is: 118,925.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,815.72 : 206,756.58 = 86,173.48 : x
  2. Step 2: Convert to fraction form
    149,815.72/206,756.58 = 86,173.48/x
  3. Step 3: Cross multiply
    149,815.72x = 206,756.58 × 86,173.48
  4. Step 4: Simplify right side
    149,815.72x = 17,816,934,011.50
  5. Step 5: Solve for x
    x = 17,816,934,011.50/149,815.72
  6. Step 6: Final answer
    x = 118,925.66

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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.