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Finding the Fourth Proportional to 125,295.36, 172,915.47 and 68,706.74

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Solution

The fourth proportional to 125,295.36, 172,915.47 and 68,706.74 is: 94,819.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,295.36 : 172,915.47 = 68,706.74 : x
  2. Step 2: Convert to fraction form
    125,295.36/172,915.47 = 68,706.74/x
  3. Step 3: Cross multiply
    125,295.36x = 172,915.47 × 68,706.74
  4. Step 4: Simplify right side
    125,295.36x = 11,880,457,374.69
  5. Step 5: Solve for x
    x = 11,880,457,374.69/125,295.36
  6. Step 6: Final answer
    x = 94,819.61

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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.