Home / 117,699.66-162,431.46-72,380.16

Finding the Fourth Proportional to 117,699.66, 162,431.46 and 72,380.16

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Solution

The fourth proportional to 117,699.66, 162,431.46 and 72,380.16 is: 99,888.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,699.66 : 162,431.46 = 72,380.16 : x
  2. Step 2: Convert to fraction form
    117,699.66/162,431.46 = 72,380.16/x
  3. Step 3: Cross multiply
    117,699.66x = 162,431.46 × 72,380.16
  4. Step 4: Simplify right side
    117,699.66x = 11,756,815,063.83
  5. Step 5: Solve for x
    x = 11,756,815,063.83/117,699.66
  6. Step 6: Final answer
    x = 99,888.27

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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.