Home / 105,020.80-157,483.82-30,123.95

Finding the Fourth Proportional to 105,020.80, 157,483.82 and 30,123.95

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Solution

The fourth proportional to 105,020.80, 157,483.82 and 30,123.95 is: 45,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,020.80 : 157,483.82 = 30,123.95 : x
  2. Step 2: Convert to fraction form
    105,020.80/157,483.82 = 30,123.95/x
  3. Step 3: Cross multiply
    105,020.80x = 157,483.82 × 30,123.95
  4. Step 4: Simplify right side
    105,020.80x = 4,744,034,175.16
  5. Step 5: Solve for x
    x = 4,744,034,175.16/105,020.80
  6. Step 6: Final answer
    x = 45,172.33

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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.