Home / 156,444.36-215,857.05-105,551.51

Finding the Fourth Proportional to 156,444.36, 215,857.05 and 105,551.51

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Solution

The fourth proportional to 156,444.36, 215,857.05 and 105,551.51 is: 145,636.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,444.36 : 215,857.05 = 105,551.51 : x
  2. Step 2: Convert to fraction form
    156,444.36/215,857.05 = 105,551.51/x
  3. Step 3: Cross multiply
    156,444.36x = 215,857.05 × 105,551.51
  4. Step 4: Simplify right side
    156,444.36x = 22,784,036,690.27
  5. Step 5: Solve for x
    x = 22,784,036,690.27/156,444.36
  6. Step 6: Final answer
    x = 145,636.68

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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.