Home / 156,139.82-215,473.08-84,519.62

Finding the Fourth Proportional to 156,139.82, 215,473.08 and 84,519.62

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Solution

The fourth proportional to 156,139.82, 215,473.08 and 84,519.62 is: 116,637.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,139.82 : 215,473.08 = 84,519.62 : x
  2. Step 2: Convert to fraction form
    156,139.82/215,473.08 = 84,519.62/x
  3. Step 3: Cross multiply
    156,139.82x = 215,473.08 × 84,519.62
  4. Step 4: Simplify right side
    156,139.82x = 18,211,702,841.83
  5. Step 5: Solve for x
    x = 18,211,702,841.83/156,139.82
  6. Step 6: Final answer
    x = 116,637.15

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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.