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Finding the Fourth Proportional to 117,959.40, 162,785.70 and 66,970.44

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Solution

The fourth proportional to 117,959.40, 162,785.70 and 66,970.44 is: 92,420.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,959.40 : 162,785.70 = 66,970.44 : x
  2. Step 2: Convert to fraction form
    117,959.40/162,785.70 = 66,970.44/x
  3. Step 3: Cross multiply
    117,959.40x = 162,785.70 × 66,970.44
  4. Step 4: Simplify right side
    117,959.40x = 10,901,829,954.71
  5. Step 5: Solve for x
    x = 10,901,829,954.71/117,959.40
  6. Step 6: Final answer
    x = 92,420.19

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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.