Home / 118,579.92-163,638-64,864.77

Finding the Fourth Proportional to 118,579.92, 163,638 and 64,864.77

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Solution

The fourth proportional to 118,579.92, 163,638 and 64,864.77 is: 89,512.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,579.92 : 163,638 = 64,864.77 : x
  2. Step 2: Convert to fraction form
    118,579.92/163,638 = 64,864.77/x
  3. Step 3: Cross multiply
    118,579.92x = 163,638 × 64,864.77
  4. Step 4: Simplify right side
    118,579.92x = 10,614,341,233.26
  5. Step 5: Solve for x
    x = 10,614,341,233.26/118,579.92
  6. Step 6: Final answer
    x = 89,512.13

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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.