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Finding the Fourth Proportional to 156,602.30, 216,111.74 and 84,982.30

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Solution

The fourth proportional to 156,602.30, 216,111.74 and 84,982.30 is: 117,275.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,602.30 : 216,111.74 = 84,982.30 : x
  2. Step 2: Convert to fraction form
    156,602.30/216,111.74 = 84,982.30/x
  3. Step 3: Cross multiply
    156,602.30x = 216,111.74 × 84,982.30
  4. Step 4: Simplify right side
    156,602.30x = 18,365,671,757.01
  5. Step 5: Solve for x
    x = 18,365,671,757.01/156,602.30
  6. Step 6: Final answer
    x = 117,275.88

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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.