Home / 90,078.08-134,969.60-30,881.92

Finding the Fourth Proportional to 90,078.08, 134,969.60 and 30,881.92

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Solution

The fourth proportional to 90,078.08, 134,969.60 and 30,881.92 is: 46,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,078.08 : 134,969.60 = 30,881.92 : x
  2. Step 2: Convert to fraction form
    90,078.08/134,969.60 = 30,881.92/x
  3. Step 3: Cross multiply
    90,078.08x = 134,969.60 × 30,881.92
  4. Step 4: Simplify right side
    90,078.08x = 4,168,120,389.63
  5. Step 5: Solve for x
    x = 4,168,120,389.63/90,078.08
  6. Step 6: Final answer
    x = 46,272.30

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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.