Home / 90,900.16-136,351.60-28,570.64

Finding the Fourth Proportional to 90,900.16, 136,351.60 and 28,570.64

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Solution

The fourth proportional to 90,900.16, 136,351.60 and 28,570.64 is: 42,856.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,900.16 : 136,351.60 = 28,570.64 : x
  2. Step 2: Convert to fraction form
    90,900.16/136,351.60 = 28,570.64/x
  3. Step 3: Cross multiply
    90,900.16x = 136,351.60 × 28,570.64
  4. Step 4: Simplify right side
    90,900.16x = 3,895,652,477.02
  5. Step 5: Solve for x
    x = 3,895,652,477.02/90,900.16
  6. Step 6: Final answer
    x = 42,856.39

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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.