Home / 100,219.47-138,302.85-54,900.30

Finding the Fourth Proportional to 100,219.47, 138,302.85 and 54,900.30

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Solution

The fourth proportional to 100,219.47, 138,302.85 and 54,900.30 is: 75,762.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,219.47 : 138,302.85 = 54,900.30 : x
  2. Step 2: Convert to fraction form
    100,219.47/138,302.85 = 54,900.30/x
  3. Step 3: Cross multiply
    100,219.47x = 138,302.85 × 54,900.30
  4. Step 4: Simplify right side
    100,219.47x = 7,592,867,955.86
  5. Step 5: Solve for x
    x = 7,592,867,955.86/100,219.47
  6. Step 6: Final answer
    x = 75,762.40

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1.5x scale

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.