Home / 103,035.05-142,186.69-57,712.92

Finding the Fourth Proportional to 103,035.05, 142,186.69 and 57,712.92

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Solution

The fourth proportional to 103,035.05, 142,186.69 and 57,712.92 is: 79,642.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,035.05 : 142,186.69 = 57,712.92 : x
  2. Step 2: Convert to fraction form
    103,035.05/142,186.69 = 57,712.92/x
  3. Step 3: Cross multiply
    103,035.05x = 142,186.69 × 57,712.92
  4. Step 4: Simplify right side
    103,035.05x = 8,206,008,603.98
  5. Step 5: Solve for x
    x = 8,206,008,603.98/103,035.05
  6. Step 6: Final answer
    x = 79,642.89

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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.