Home / 99,346.32-137,105.60-56,905.70

Finding the Fourth Proportional to 99,346.32, 137,105.60 and 56,905.70

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Solution

The fourth proportional to 99,346.32, 137,105.60 and 56,905.70 is: 78,534.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,346.32 : 137,105.60 = 56,905.70 : x
  2. Step 2: Convert to fraction form
    99,346.32/137,105.60 = 56,905.70/x
  3. Step 3: Cross multiply
    99,346.32x = 137,105.60 × 56,905.70
  4. Step 4: Simplify right side
    99,346.32x = 7,802,089,171.86
  5. Step 5: Solve for x
    x = 7,802,089,171.86/99,346.32
  6. Step 6: Final answer
    x = 78,534.25

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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.