Home / 90,203.92-135,303.05-42,853.07

Finding the Fourth Proportional to 90,203.92, 135,303.05 and 42,853.07

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Solution

The fourth proportional to 90,203.92, 135,303.05 and 42,853.07 is: 64,278.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,203.92 : 135,303.05 = 42,853.07 : x
  2. Step 2: Convert to fraction form
    90,203.92/135,303.05 = 42,853.07/x
  3. Step 3: Cross multiply
    90,203.92x = 135,303.05 × 42,853.07
  4. Step 4: Simplify right side
    90,203.92x = 5,798,151,518.25
  5. Step 5: Solve for x
    x = 5,798,151,518.25/90,203.92
  6. Step 6: Final answer
    x = 64,278.27

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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.