Home / 156,290.10-215,680.05-84,671.91

Finding the Fourth Proportional to 156,290.10, 215,680.05 and 84,671.91

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Solution

The fourth proportional to 156,290.10, 215,680.05 and 84,671.91 is: 116,847.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,290.10 : 215,680.05 = 84,671.91 : x
  2. Step 2: Convert to fraction form
    156,290.10/215,680.05 = 84,671.91/x
  3. Step 3: Cross multiply
    156,290.10x = 215,680.05 × 84,671.91
  4. Step 4: Simplify right side
    156,290.10x = 18,262,041,782.40
  5. Step 5: Solve for x
    x = 18,262,041,782.40/156,290.10
  6. Step 6: Final answer
    x = 116,847.08

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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.