Home / 103,621.50-142,997.67-58,909.50

Finding the Fourth Proportional to 103,621.50, 142,997.67 and 58,909.50

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Solution

The fourth proportional to 103,621.50, 142,997.67 and 58,909.50 is: 81,295.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.50 : 142,997.67 = 58,909.50 : x
  2. Step 2: Convert to fraction form
    103,621.50/142,997.67 = 58,909.50/x
  3. Step 3: Cross multiply
    103,621.50x = 142,997.67 × 58,909.50
  4. Step 4: Simplify right side
    103,621.50x = 8,423,921,240.87
  5. Step 5: Solve for x
    x = 8,423,921,240.87/103,621.50
  6. Step 6: Final answer
    x = 81,295.11

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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.