Home / 156,426.32-215,068.99-139,267.28

Finding the Fourth Proportional to 156,426.32, 215,068.99 and 139,267.28

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Solution

The fourth proportional to 156,426.32, 215,068.99 and 139,267.28 is: 191,477.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,426.32 : 215,068.99 = 139,267.28 : x
  2. Step 2: Convert to fraction form
    156,426.32/215,068.99 = 139,267.28/x
  3. Step 3: Cross multiply
    156,426.32x = 215,068.99 × 139,267.28
  4. Step 4: Simplify right side
    156,426.32x = 29,952,073,249.65
  5. Step 5: Solve for x
    x = 29,952,073,249.65/156,426.32
  6. Step 6: Final answer
    x = 191,477.20

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.