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Finding the Fourth Proportional to 114,142.51, 157,420.02 and 68,810.56

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Solution

The fourth proportional to 114,142.51, 157,420.02 and 68,810.56 is: 94,900.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,142.51 : 157,420.02 = 68,810.56 : x
  2. Step 2: Convert to fraction form
    114,142.51/157,420.02 = 68,810.56/x
  3. Step 3: Cross multiply
    114,142.51x = 157,420.02 × 68,810.56
  4. Step 4: Simplify right side
    114,142.51x = 10,832,159,731.41
  5. Step 5: Solve for x
    x = 10,832,159,731.41/114,142.51
  6. Step 6: Final answer
    x = 94,900.31

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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.