Home / 90,002.30-134,675.40-82,129.10

Finding the Fourth Proportional to 90,002.30, 134,675.40 and 82,129.10

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Solution

The fourth proportional to 90,002.30, 134,675.40 and 82,129.10 is: 122,894.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,002.30 : 134,675.40 = 82,129.10 : x
  2. Step 2: Convert to fraction form
    90,002.30/134,675.40 = 82,129.10/x
  3. Step 3: Cross multiply
    90,002.30x = 134,675.40 × 82,129.10
  4. Step 4: Simplify right side
    90,002.30x = 11,060,769,394.14
  5. Step 5: Solve for x
    x = 11,060,769,394.14/90,002.30
  6. Step 6: Final answer
    x = 122,894.30

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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.