Home / 135,623-203,434.54-42,128.76

Finding the Fourth Proportional to 135,623, 203,434.54 and 42,128.76

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Solution

The fourth proportional to 135,623, 203,434.54 and 42,128.76 is: 63,193.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,623 : 203,434.54 = 42,128.76 : x
  2. Step 2: Convert to fraction form
    135,623/203,434.54 = 42,128.76/x
  3. Step 3: Cross multiply
    135,623x = 203,434.54 × 42,128.76
  4. Step 4: Simplify right side
    135,623x = 8,570,444,911.37
  5. Step 5: Solve for x
    x = 8,570,444,911.37/135,623
  6. Step 6: Final answer
    x = 63,193.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.