Home / 156,929.10-216,564.03-85,307.58

Finding the Fourth Proportional to 156,929.10, 216,564.03 and 85,307.58

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Solution

The fourth proportional to 156,929.10, 216,564.03 and 85,307.58 is: 117,725.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,929.10 : 216,564.03 = 85,307.58 : x
  2. Step 2: Convert to fraction form
    156,929.10/216,564.03 = 85,307.58/x
  3. Step 3: Cross multiply
    156,929.10x = 216,564.03 × 85,307.58
  4. Step 4: Simplify right side
    156,929.10x = 18,474,553,314.35
  5. Step 5: Solve for x
    x = 18,474,553,314.35/156,929.10
  6. Step 6: Final answer
    x = 117,725.48

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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.