Home / 103,187.32-154,755-39,985.76

Finding the Fourth Proportional to 103,187.32, 154,755 and 39,985.76

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Solution

The fourth proportional to 103,187.32, 154,755 and 39,985.76 is: 59,968.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,187.32 : 154,755 = 39,985.76 : x
  2. Step 2: Convert to fraction form
    103,187.32/154,755 = 39,985.76/x
  3. Step 3: Cross multiply
    103,187.32x = 154,755 × 39,985.76
  4. Step 4: Simplify right side
    103,187.32x = 6,187,996,675.69
  5. Step 5: Solve for x
    x = 6,187,996,675.69/103,187.32
  6. Step 6: Final answer
    x = 59,968.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.