Home / 216,728,035.50-299,084,689.02-129,807,907.50

Finding the Fourth Proportional to 216,728,035.50, 299,084,689.02 and 129,807,907.50

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Solution

The fourth proportional to 216,728,035.50, 299,084,689.02 and 129,807,907.50 is: 179,134,912.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,728,035.50 : 299,084,689.02 = 129,807,907.50 : x
  2. Step 2: Convert to fraction form
    216,728,035.50/299,084,689.02 = 129,807,907.50/x
  3. Step 3: Cross multiply
    216,728,035.50x = 299,084,689.02 × 129,807,907.50
  4. Step 4: Simplify right side
    216,728,035.50x = 38,823,557,646,974,424
  5. Step 5: Solve for x
    x = 38,823,557,646,974,424/216,728,035.50
  6. Step 6: Final answer
    x = 179,134,912.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.