Home / 100,860.52-139,196.10-55,547.32

Finding the Fourth Proportional to 100,860.52, 139,196.10 and 55,547.32

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Solution

The fourth proportional to 100,860.52, 139,196.10 and 55,547.32 is: 76,660.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,860.52 : 139,196.10 = 55,547.32 : x
  2. Step 2: Convert to fraction form
    100,860.52/139,196.10 = 55,547.32/x
  3. Step 3: Cross multiply
    100,860.52x = 139,196.10 × 55,547.32
  4. Step 4: Simplify right side
    100,860.52x = 7,731,970,309.45
  5. Step 5: Solve for x
    x = 7,731,970,309.45/100,860.52
  6. Step 6: Final answer
    x = 76,660.03

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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.