Home / 117,450.96-162,111.12-72,139.80

Finding the Fourth Proportional to 117,450.96, 162,111.12 and 72,139.80

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Solution

The fourth proportional to 117,450.96, 162,111.12 and 72,139.80 is: 99,570.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,450.96 : 162,111.12 = 72,139.80 : x
  2. Step 2: Convert to fraction form
    117,450.96/162,111.12 = 72,139.80/x
  3. Step 3: Cross multiply
    117,450.96x = 162,111.12 × 72,139.80
  4. Step 4: Simplify right side
    117,450.96x = 11,694,663,774.58
  5. Step 5: Solve for x
    x = 11,694,663,774.58/117,450.96
  6. Step 6: Final answer
    x = 99,570.61

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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.