Home / 155,103.30-213,988.04-101,419.74

Finding the Fourth Proportional to 155,103.30, 213,988.04 and 101,419.74

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Solution

The fourth proportional to 155,103.30, 213,988.04 and 101,419.74 is: 139,923.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,103.30 : 213,988.04 = 101,419.74 : x
  2. Step 2: Convert to fraction form
    155,103.30/213,988.04 = 101,419.74/x
  3. Step 3: Cross multiply
    155,103.30x = 213,988.04 × 101,419.74
  4. Step 4: Simplify right side
    155,103.30x = 21,702,610,872.81
  5. Step 5: Solve for x
    x = 21,702,610,872.81/155,103.30
  6. Step 6: Final answer
    x = 139,923.59

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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.