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Finding the Fourth Proportional to 129,061.03, 178,032.44 and 119,927.68

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Solution

The fourth proportional to 129,061.03, 178,032.44 and 119,927.68 is: 165,433.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,061.03 : 178,032.44 = 119,927.68 : x
  2. Step 2: Convert to fraction form
    129,061.03/178,032.44 = 119,927.68/x
  3. Step 3: Cross multiply
    129,061.03x = 178,032.44 × 119,927.68
  4. Step 4: Simplify right side
    129,061.03x = 21,351,017,493.94
  5. Step 5: Solve for x
    x = 21,351,017,493.94/129,061.03
  6. Step 6: Final answer
    x = 165,433.50

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1.5x scale

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.