Home / 103,129.95-154,709.76-39,111.66

Finding the Fourth Proportional to 103,129.95, 154,709.76 and 39,111.66

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Solution

The fourth proportional to 103,129.95, 154,709.76 and 39,111.66 is: 58,673.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,129.95 : 154,709.76 = 39,111.66 : x
  2. Step 2: Convert to fraction form
    103,129.95/154,709.76 = 39,111.66/x
  3. Step 3: Cross multiply
    103,129.95x = 154,709.76 × 39,111.66
  4. Step 4: Simplify right side
    103,129.95x = 6,050,955,531.80
  5. Step 5: Solve for x
    x = 6,050,955,531.80/103,129.95
  6. Step 6: Final answer
    x = 58,673.12

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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.