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Finding the Fourth Proportional to 117,479.34, 162,121.08 and 66,490.68

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Solution

The fourth proportional to 117,479.34, 162,121.08 and 66,490.68 is: 91,756.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,479.34 : 162,121.08 = 66,490.68 : x
  2. Step 2: Convert to fraction form
    117,479.34/162,121.08 = 66,490.68/x
  3. Step 3: Cross multiply
    117,479.34x = 162,121.08 × 66,490.68
  4. Step 4: Simplify right side
    117,479.34x = 10,779,540,851.53
  5. Step 5: Solve for x
    x = 10,779,540,851.53/117,479.34
  6. Step 6: Final answer
    x = 91,756.91

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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.