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Finding the Fourth Proportional to 156,886.64, 216,505.25 and 85,266.68

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Solution

The fourth proportional to 156,886.64, 216,505.25 and 85,266.68 is: 117,668.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,886.64 : 216,505.25 = 85,266.68 : x
  2. Step 2: Convert to fraction form
    156,886.64/216,505.25 = 85,266.68/x
  3. Step 3: Cross multiply
    156,886.64x = 216,505.25 × 85,266.68
  4. Step 4: Simplify right side
    156,886.64x = 18,460,683,160.59
  5. Step 5: Solve for x
    x = 18,460,683,160.59/156,886.64
  6. Step 6: Final answer
    x = 117,668.93

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.