Home / 103,699.58-143,116.17-63,440.15

Finding the Fourth Proportional to 103,699.58, 143,116.17 and 63,440.15

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Solution

The fourth proportional to 103,699.58, 143,116.17 and 63,440.15 is: 87,553.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,699.58 : 143,116.17 = 63,440.15 : x
  2. Step 2: Convert to fraction form
    103,699.58/143,116.17 = 63,440.15/x
  3. Step 3: Cross multiply
    103,699.58x = 143,116.17 × 63,440.15
  4. Step 4: Simplify right side
    103,699.58x = 9,079,311,292.23
  5. Step 5: Solve for x
    x = 9,079,311,292.23/103,699.58
  6. Step 6: Final answer
    x = 87,553.98

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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.