Home / 156,298.22-215,691-84,678.20

Finding the Fourth Proportional to 156,298.22, 215,691 and 84,678.20

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Solution

The fourth proportional to 156,298.22, 215,691 and 84,678.20 is: 116,855.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,298.22 : 215,691 = 84,678.20 : x
  2. Step 2: Convert to fraction form
    156,298.22/215,691 = 84,678.20/x
  3. Step 3: Cross multiply
    156,298.22x = 215,691 × 84,678.20
  4. Step 4: Simplify right side
    156,298.22x = 18,264,325,636.20
  5. Step 5: Solve for x
    x = 18,264,325,636.20/156,298.22
  6. Step 6: Final answer
    x = 116,855.62

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1.5x scale

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.