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Finding the Fourth Proportional to 101,153.88, 139,590.41 and 55,829.21

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Solution

The fourth proportional to 101,153.88, 139,590.41 and 55,829.21 is: 77,043.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,153.88 : 139,590.41 = 55,829.21 : x
  2. Step 2: Convert to fraction form
    101,153.88/139,590.41 = 55,829.21/x
  3. Step 3: Cross multiply
    101,153.88x = 139,590.41 × 55,829.21
  4. Step 4: Simplify right side
    101,153.88x = 7,793,221,336.78
  5. Step 5: Solve for x
    x = 7,793,221,336.78/101,153.88
  6. Step 6: Final answer
    x = 77,043.23

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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.