Home / 100,547.02-138,756.03-55,226.05

Finding the Fourth Proportional to 100,547.02, 138,756.03 and 55,226.05

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Solution

The fourth proportional to 100,547.02, 138,756.03 and 55,226.05 is: 76,212.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,547.02 : 138,756.03 = 55,226.05 : x
  2. Step 2: Convert to fraction form
    100,547.02/138,756.03 = 55,226.05/x
  3. Step 3: Cross multiply
    100,547.02x = 138,756.03 × 55,226.05
  4. Step 4: Simplify right side
    100,547.02x = 7,662,947,450.58
  5. Step 5: Solve for x
    x = 7,662,947,450.58/100,547.02
  6. Step 6: Final answer
    x = 76,212.58

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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.