Home / 100,922.75-139,273.40-56,210.75

Finding the Fourth Proportional to 100,922.75, 139,273.40 and 56,210.75

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Solution

The fourth proportional to 100,922.75, 139,273.40 and 56,210.75 is: 77,570.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,922.75 : 139,273.40 = 56,210.75 : x
  2. Step 2: Convert to fraction form
    100,922.75/139,273.40 = 56,210.75/x
  3. Step 3: Cross multiply
    100,922.75x = 139,273.40 × 56,210.75
  4. Step 4: Simplify right side
    100,922.75x = 7,828,662,269.05
  5. Step 5: Solve for x
    x = 7,828,662,269.05/100,922.75
  6. Step 6: Final answer
    x = 77,570.84

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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.