Home / 156,971.39-216,621.95-85,352.00

Finding the Fourth Proportional to 156,971.39, 216,621.95 and 85,352.00

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Solution

The fourth proportional to 156,971.39, 216,621.95 and 85,352.00 is: 117,786.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,971.39 : 216,621.95 = 85,352.00 : x
  2. Step 2: Convert to fraction form
    156,971.39/216,621.95 = 85,352.00/x
  3. Step 3: Cross multiply
    156,971.39x = 216,621.95 × 85,352.00
  4. Step 4: Simplify right side
    156,971.39x = 18,489,115,166.53
  5. Step 5: Solve for x
    x = 18,489,115,166.53/156,971.39
  6. Step 6: Final answer
    x = 117,786.53

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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.