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Finding the Fourth Proportional to 117,915.50, 162,721.68 and 70,167.62

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Solution

The fourth proportional to 117,915.50, 162,721.68 and 70,167.62 is: 96,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,915.50 : 162,721.68 = 70,167.62 : x
  2. Step 2: Convert to fraction form
    117,915.50/162,721.68 = 70,167.62/x
  3. Step 3: Cross multiply
    117,915.50x = 162,721.68 × 70,167.62
  4. Step 4: Simplify right side
    117,915.50x = 11,417,793,008.00
  5. Step 5: Solve for x
    x = 11,417,793,008.00/117,915.50
  6. Step 6: Final answer
    x = 96,830.30

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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.