Home / 103,336.64-142,647.84-87,503.04

Finding the Fourth Proportional to 103,336.64, 142,647.84 and 87,503.04

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Solution

The fourth proportional to 103,336.64, 142,647.84 and 87,503.04 is: 120,790.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,336.64 : 142,647.84 = 87,503.04 : x
  2. Step 2: Convert to fraction form
    103,336.64/142,647.84 = 87,503.04/x
  3. Step 3: Cross multiply
    103,336.64x = 142,647.84 × 87,503.04
  4. Step 4: Simplify right side
    103,336.64x = 12,482,119,649.43
  5. Step 5: Solve for x
    x = 12,482,119,649.43/103,336.64
  6. Step 6: Final answer
    x = 120,790.84

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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.