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Finding the Fourth Proportional to 117,612, 162,314.80 and 64,630.24

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Solution

The fourth proportional to 117,612, 162,314.80 and 64,630.24 is: 89,195.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,612 : 162,314.80 = 64,630.24 : x
  2. Step 2: Convert to fraction form
    117,612/162,314.80 = 64,630.24/x
  3. Step 3: Cross multiply
    117,612x = 162,314.80 × 64,630.24
  4. Step 4: Simplify right side
    117,612x = 10,490,444,479.55
  5. Step 5: Solve for x
    x = 10,490,444,479.55/117,612
  6. Step 6: Final answer
    x = 89,195.36

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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.