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Finding the Fourth Proportional to 156,969.76, 216,616.64 and 116,862.88

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Solution

The fourth proportional to 156,969.76, 216,616.64 and 116,862.88 is: 161,269.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,969.76 : 216,616.64 = 116,862.88 : x
  2. Step 2: Convert to fraction form
    156,969.76/216,616.64 = 116,862.88/x
  3. Step 3: Cross multiply
    156,969.76x = 216,616.64 × 116,862.88
  4. Step 4: Simplify right side
    156,969.76x = 25,314,444,406.32
  5. Step 5: Solve for x
    x = 25,314,444,406.32/156,969.76
  6. Step 6: Final answer
    x = 161,269.56

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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.