Home / 103,677.50-143,092.23-78,483.26

Finding the Fourth Proportional to 103,677.50, 143,092.23 and 78,483.26

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Solution

The fourth proportional to 103,677.50, 143,092.23 and 78,483.26 is: 108,319.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,677.50 : 143,092.23 = 78,483.26 : x
  2. Step 2: Convert to fraction form
    103,677.50/143,092.23 = 78,483.26/x
  3. Step 3: Cross multiply
    103,677.50x = 143,092.23 × 78,483.26
  4. Step 4: Simplify right side
    103,677.50x = 11,230,344,691.07
  5. Step 5: Solve for x
    x = 11,230,344,691.07/103,677.50
  6. Step 6: Final answer
    x = 108,319.98

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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.