Home / 139,785,662.40-209,678,493.60-71,761,214.40

Finding the Fourth Proportional to 139,785,662.40, 209,678,493.60 and 71,761,214.40

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Solution

The fourth proportional to 139,785,662.40, 209,678,493.60 and 71,761,214.40 is: 107,641,821.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,785,662.40 : 209,678,493.60 = 71,761,214.40 : x
  2. Step 2: Convert to fraction form
    139,785,662.40/209,678,493.60 = 71,761,214.40/x
  3. Step 3: Cross multiply
    139,785,662.40x = 209,678,493.60 × 71,761,214.40
  4. Step 4: Simplify right side
    139,785,662.40x = 15,046,783,334,298,628
  5. Step 5: Solve for x
    x = 15,046,783,334,298,628/139,785,662.40
  6. Step 6: Final answer
    x = 107,641,821.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.