Home / 142,116,428.80-213,174,643.20-81,650,252.80

Finding the Fourth Proportional to 142,116,428.80, 213,174,643.20 and 81,650,252.80

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Solution

The fourth proportional to 142,116,428.80, 213,174,643.20 and 81,650,252.80 is: 122,475,379.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,116,428.80 : 213,174,643.20 = 81,650,252.80 : x
  2. Step 2: Convert to fraction form
    142,116,428.80/213,174,643.20 = 81,650,252.80/x
  3. Step 3: Cross multiply
    142,116,428.80x = 213,174,643.20 × 81,650,252.80
  4. Step 4: Simplify right side
    142,116,428.80x = 17,405,763,507,829,800
  5. Step 5: Solve for x
    x = 17,405,763,507,829,800/142,116,428.80
  6. Step 6: Final answer
    x = 122,475,379.20

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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.