Home / 104,815.15-144,647.51-57,071.12

Finding the Fourth Proportional to 104,815.15, 144,647.51 and 57,071.12

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Solution

The fourth proportional to 104,815.15, 144,647.51 and 57,071.12 is: 78,759.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,815.15 : 144,647.51 = 57,071.12 : x
  2. Step 2: Convert to fraction form
    104,815.15/144,647.51 = 57,071.12/x
  3. Step 3: Cross multiply
    104,815.15x = 144,647.51 × 57,071.12
  4. Step 4: Simplify right side
    104,815.15x = 8,255,194,392.32
  5. Step 5: Solve for x
    x = 8,255,194,392.32/104,815.15
  6. Step 6: Final answer
    x = 78,759.56

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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.