Home / 103,630.50-143,015.32-61,188.12

Finding the Fourth Proportional to 103,630.50, 143,015.32 and 61,188.12

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Solution

The fourth proportional to 103,630.50, 143,015.32 and 61,188.12 is: 84,442.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.50 : 143,015.32 = 61,188.12 : x
  2. Step 2: Convert to fraction form
    103,630.50/143,015.32 = 61,188.12/x
  3. Step 3: Cross multiply
    103,630.50x = 143,015.32 × 61,188.12
  4. Step 4: Simplify right side
    103,630.50x = 8,750,838,562.00
  5. Step 5: Solve for x
    x = 8,750,838,562.00/103,630.50
  6. Step 6: Final answer
    x = 84,442.69

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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.