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Finding the Fourth Proportional to 156,684.64, 234,966.98 and 66,671.05

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Solution

The fourth proportional to 156,684.64, 234,966.98 and 66,671.05 is: 99,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,684.64 : 234,966.98 = 66,671.05 : x
  2. Step 2: Convert to fraction form
    156,684.64/234,966.98 = 66,671.05/x
  3. Step 3: Cross multiply
    156,684.64x = 234,966.98 × 66,671.05
  4. Step 4: Simplify right side
    156,684.64x = 15,665,495,271.93
  5. Step 5: Solve for x
    x = 15,665,495,271.93/156,684.64
  6. Step 6: Final answer
    x = 99,981.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.