Home / 131,108,972.40-196,663,458.60-69,886,969.20

Finding the Fourth Proportional to 131,108,972.40, 196,663,458.60 and 69,886,969.20

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Solution

The fourth proportional to 131,108,972.40, 196,663,458.60 and 69,886,969.20 is: 104,830,453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,108,972.40 : 196,663,458.60 = 69,886,969.20 : x
  2. Step 2: Convert to fraction form
    131,108,972.40/196,663,458.60 = 69,886,969.20/x
  3. Step 3: Cross multiply
    131,108,972.40x = 196,663,458.60 × 69,886,969.20
  4. Step 4: Simplify right side
    131,108,972.40x = 13,744,213,073,943,676
  5. Step 5: Solve for x
    x = 13,744,213,073,943,676/131,108,972.40
  6. Step 6: Final answer
    x = 104,830,453.80

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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.