Home / 136,029.53-187,666.93-78,658.31

Finding the Fourth Proportional to 136,029.53, 187,666.93 and 78,658.31

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Solution

The fourth proportional to 136,029.53, 187,666.93 and 78,658.31 is: 108,517.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,029.53 : 187,666.93 = 78,658.31 : x
  2. Step 2: Convert to fraction form
    136,029.53/187,666.93 = 78,658.31/x
  3. Step 3: Cross multiply
    136,029.53x = 187,666.93 × 78,658.31
  4. Step 4: Simplify right side
    136,029.53x = 14,761,563,556.69
  5. Step 5: Solve for x
    x = 14,761,563,556.69/136,029.53
  6. Step 6: Final answer
    x = 108,517.35

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1.5x scale

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.