Home / 100,945.15-139,292.13-57,922.27

Finding the Fourth Proportional to 100,945.15, 139,292.13 and 57,922.27

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Solution

The fourth proportional to 100,945.15, 139,292.13 and 57,922.27 is: 79,925.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,945.15 : 139,292.13 = 57,922.27 : x
  2. Step 2: Convert to fraction form
    100,945.15/139,292.13 = 57,922.27/x
  3. Step 3: Cross multiply
    100,945.15x = 139,292.13 × 57,922.27
  4. Step 4: Simplify right side
    100,945.15x = 8,068,116,362.74
  5. Step 5: Solve for x
    x = 8,068,116,362.74/100,945.15
  6. Step 6: Final answer
    x = 79,925.75

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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.