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Finding the Fourth Proportional to 156,318.99, 215,794.59 and 104,724.93

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Solution

The fourth proportional to 156,318.99, 215,794.59 and 104,724.93 is: 144,570.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,318.99 : 215,794.59 = 104,724.93 : x
  2. Step 2: Convert to fraction form
    156,318.99/215,794.59 = 104,724.93/x
  3. Step 3: Cross multiply
    156,318.99x = 215,794.59 × 104,724.93
  4. Step 4: Simplify right side
    156,318.99x = 22,599,072,530.83
  5. Step 5: Solve for x
    x = 22,599,072,530.83/156,318.99
  6. Step 6: Final answer
    x = 144,570.23

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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.