Home / 102,942.88-142,061.66-57,621.76

Finding the Fourth Proportional to 102,942.88, 142,061.66 and 57,621.76

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Solution

The fourth proportional to 102,942.88, 142,061.66 and 57,621.76 is: 79,518.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,942.88 : 142,061.66 = 57,621.76 : x
  2. Step 2: Convert to fraction form
    102,942.88/142,061.66 = 57,621.76/x
  3. Step 3: Cross multiply
    102,942.88x = 142,061.66 × 57,621.76
  4. Step 4: Simplify right side
    102,942.88x = 8,185,842,666.62
  5. Step 5: Solve for x
    x = 8,185,842,666.62/102,942.88
  6. Step 6: Final answer
    x = 79,518.30

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1.5x scale

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.