Home / 156,765.02-216,332.16-85,143.50

Finding the Fourth Proportional to 156,765.02, 216,332.16 and 85,143.50

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Solution

The fourth proportional to 156,765.02, 216,332.16 and 85,143.50 is: 117,496.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,765.02 : 216,332.16 = 85,143.50 : x
  2. Step 2: Convert to fraction form
    156,765.02/216,332.16 = 85,143.50/x
  3. Step 3: Cross multiply
    156,765.02x = 216,332.16 × 85,143.50
  4. Step 4: Simplify right side
    156,765.02x = 18,419,277,264.96
  5. Step 5: Solve for x
    x = 18,419,277,264.96/156,765.02
  6. Step 6: Final answer
    x = 117,496.09

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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.