Home / 100,652.35-138,897.37-55,330.42

Finding the Fourth Proportional to 100,652.35, 138,897.37 and 55,330.42

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Solution

The fourth proportional to 100,652.35, 138,897.37 and 55,330.42 is: 76,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,652.35 : 138,897.37 = 55,330.42 : x
  2. Step 2: Convert to fraction form
    100,652.35/138,897.37 = 55,330.42/x
  3. Step 3: Cross multiply
    100,652.35x = 138,897.37 × 55,330.42
  4. Step 4: Simplify right side
    100,652.35x = 7,685,249,819.00
  5. Step 5: Solve for x
    x = 7,685,249,819.00/100,652.35
  6. Step 6: Final answer
    x = 76,354.40

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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.