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Finding the Fourth Proportional to 156,877.98, 216,491.52 and 85,258.02

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Solution

The fourth proportional to 156,877.98, 216,491.52 and 85,258.02 is: 117,656.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,877.98 : 216,491.52 = 85,258.02 : x
  2. Step 2: Convert to fraction form
    156,877.98/216,491.52 = 85,258.02/x
  3. Step 3: Cross multiply
    156,877.98x = 216,491.52 × 85,258.02
  4. Step 4: Simplify right side
    156,877.98x = 18,457,638,341.99
  5. Step 5: Solve for x
    x = 18,457,638,341.99/156,877.98
  6. Step 6: Final answer
    x = 117,656.02

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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.