Home / 142,128,015.20-213,192,022.80-61,348,983.20

Finding the Fourth Proportional to 142,128,015.20, 213,192,022.80 and 61,348,983.20

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Solution

The fourth proportional to 142,128,015.20, 213,192,022.80 and 61,348,983.20 is: 92,023,474.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,128,015.20 : 213,192,022.80 = 61,348,983.20 : x
  2. Step 2: Convert to fraction form
    142,128,015.20/213,192,022.80 = 61,348,983.20/x
  3. Step 3: Cross multiply
    142,128,015.20x = 213,192,022.80 × 61,348,983.20
  4. Step 4: Simplify right side
    142,128,015.20x = 13,079,113,825,131,218
  5. Step 5: Solve for x
    x = 13,079,113,825,131,218/142,128,015.20
  6. Step 6: Final answer
    x = 92,023,474.80

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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.