Home / 102,961.73-142,080.23-57,018.07

Finding the Fourth Proportional to 102,961.73, 142,080.23 and 57,018.07

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Solution

The fourth proportional to 102,961.73, 142,080.23 and 57,018.07 is: 78,681.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,961.73 : 142,080.23 = 57,018.07 : x
  2. Step 2: Convert to fraction form
    102,961.73/142,080.23 = 57,018.07/x
  3. Step 3: Cross multiply
    102,961.73x = 142,080.23 × 57,018.07
  4. Step 4: Simplify right side
    102,961.73x = 8,101,140,499.76
  5. Step 5: Solve for x
    x = 8,101,140,499.76/102,961.73
  6. Step 6: Final answer
    x = 78,681.08

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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.