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Finding the Fourth Proportional to 129,674.25, 178,950.47 and 70,058.25

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Solution

The fourth proportional to 129,674.25, 178,950.47 and 70,058.25 is: 96,680.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,674.25 : 178,950.47 = 70,058.25 : x
  2. Step 2: Convert to fraction form
    129,674.25/178,950.47 = 70,058.25/x
  3. Step 3: Cross multiply
    129,674.25x = 178,950.47 × 70,058.25
  4. Step 4: Simplify right side
    129,674.25x = 12,536,956,414.59
  5. Step 5: Solve for x
    x = 12,536,956,414.59/129,674.25
  6. Step 6: Final answer
    x = 96,680.39

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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.