Home / 118,939.44-164,143.92-78,582.45

Finding the Fourth Proportional to 118,939.44, 164,143.92 and 78,582.45

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Solution

The fourth proportional to 118,939.44, 164,143.92 and 78,582.45 is: 108,448.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,939.44 : 164,143.92 = 78,582.45 : x
  2. Step 2: Convert to fraction form
    118,939.44/164,143.92 = 78,582.45/x
  3. Step 3: Cross multiply
    118,939.44x = 164,143.92 × 78,582.45
  4. Step 4: Simplify right side
    118,939.44x = 12,898,831,854.40
  5. Step 5: Solve for x
    x = 12,898,831,854.40/118,939.44
  6. Step 6: Final answer
    x = 108,448.74

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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.