Home / 139,952,346.40-209,928,519.60-89,059,981.60

Finding the Fourth Proportional to 139,952,346.40, 209,928,519.60 and 89,059,981.60

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Solution

The fourth proportional to 139,952,346.40, 209,928,519.60 and 89,059,981.60 is: 133,589,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,952,346.40 : 209,928,519.60 = 89,059,981.60 : x
  2. Step 2: Convert to fraction form
    139,952,346.40/209,928,519.60 = 89,059,981.60/x
  3. Step 3: Cross multiply
    139,952,346.40x = 209,928,519.60 × 89,059,981.60
  4. Step 4: Simplify right side
    139,952,346.40x = 18,696,230,092,891,236
  5. Step 5: Solve for x
    x = 18,696,230,092,891,236/139,952,346.40
  6. Step 6: Final answer
    x = 133,589,972.40

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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.