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Finding the Fourth Proportional to 156,611.16, 216,122.85 and 88,621.47

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Solution

The fourth proportional to 156,611.16, 216,122.85 and 88,621.47 is: 122,297.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,611.16 : 216,122.85 = 88,621.47 : x
  2. Step 2: Convert to fraction form
    156,611.16/216,122.85 = 88,621.47/x
  3. Step 3: Cross multiply
    156,611.16x = 216,122.85 × 88,621.47
  4. Step 4: Simplify right side
    156,611.16x = 19,153,124,667.59
  5. Step 5: Solve for x
    x = 19,153,124,667.59/156,611.16
  6. Step 6: Final answer
    x = 122,297.32

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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.