Home / 156,435.20-215,812.80-104,690.24

Finding the Fourth Proportional to 156,435.20, 215,812.80 and 104,690.24

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Solution

The fourth proportional to 156,435.20, 215,812.80 and 104,690.24 is: 144,427.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,435.20 : 215,812.80 = 104,690.24 : x
  2. Step 2: Convert to fraction form
    156,435.20/215,812.80 = 104,690.24/x
  3. Step 3: Cross multiply
    156,435.20x = 215,812.80 × 104,690.24
  4. Step 4: Simplify right side
    156,435.20x = 22,593,493,827.07
  5. Step 5: Solve for x
    x = 22,593,493,827.07/156,435.20
  6. Step 6: Final answer
    x = 144,427.17

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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.