Home / 156,390.15-215,818.86-84,770.46

Finding the Fourth Proportional to 156,390.15, 215,818.86 and 84,770.46

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Solution

The fourth proportional to 156,390.15, 215,818.86 and 84,770.46 is: 116,983.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,390.15 : 215,818.86 = 84,770.46 : x
  2. Step 2: Convert to fraction form
    156,390.15/215,818.86 = 84,770.46/x
  3. Step 3: Cross multiply
    156,390.15x = 215,818.86 × 84,770.46
  4. Step 4: Simplify right side
    156,390.15x = 18,295,064,038.88
  5. Step 5: Solve for x
    x = 18,295,064,038.88/156,390.15
  6. Step 6: Final answer
    x = 116,983.48

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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.