Home / 100,648.32-138,897.60-58,220.16

Finding the Fourth Proportional to 100,648.32, 138,897.60 and 58,220.16

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Solution

The fourth proportional to 100,648.32, 138,897.60 and 58,220.16 is: 80,345.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,648.32 : 138,897.60 = 58,220.16 : x
  2. Step 2: Convert to fraction form
    100,648.32/138,897.60 = 58,220.16/x
  3. Step 3: Cross multiply
    100,648.32x = 138,897.60 × 58,220.16
  4. Step 4: Simplify right side
    100,648.32x = 8,086,640,495.62
  5. Step 5: Solve for x
    x = 8,086,640,495.62/100,648.32
  6. Step 6: Final answer
    x = 80,345.51

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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.