Home / 143,638,618.72-198,222,552.72-81,762,935.80

Finding the Fourth Proportional to 143,638,618.72, 198,222,552.72 and 81,762,935.80

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Solution

The fourth proportional to 143,638,618.72, 198,222,552.72 and 81,762,935.80 is: 112,833,568.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,638,618.72 : 198,222,552.72 = 81,762,935.80 : x
  2. Step 2: Convert to fraction form
    143,638,618.72/198,222,552.72 = 81,762,935.80/x
  3. Step 3: Cross multiply
    143,638,618.72x = 198,222,552.72 × 81,762,935.80
  4. Step 4: Simplify right side
    143,638,618.72x = 16,207,257,852,157,474
  5. Step 5: Solve for x
    x = 16,207,257,852,157,474/143,638,618.72
  6. Step 6: Final answer
    x = 112,833,568.00

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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.