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Finding the Fourth Proportional to 124,509.92, 171,816.84 and 70,787.36

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Solution

The fourth proportional to 124,509.92, 171,816.84 and 70,787.36 is: 97,682.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,509.92 : 171,816.84 = 70,787.36 : x
  2. Step 2: Convert to fraction form
    124,509.92/171,816.84 = 70,787.36/x
  3. Step 3: Cross multiply
    124,509.92x = 171,816.84 × 70,787.36
  4. Step 4: Simplify right side
    124,509.92x = 12,162,460,507.14
  5. Step 5: Solve for x
    x = 12,162,460,507.14/124,509.92
  6. Step 6: Final answer
    x = 97,682.66

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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.