Home / 217,075.20-325,612.80-90,693.60

Finding the Fourth Proportional to 217,075.20, 325,612.80 and 90,693.60

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Solution

The fourth proportional to 217,075.20, 325,612.80 and 90,693.60 is: 136,040.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,075.20 : 325,612.80 = 90,693.60 : x
  2. Step 2: Convert to fraction form
    217,075.20/325,612.80 = 90,693.60/x
  3. Step 3: Cross multiply
    217,075.20x = 325,612.80 × 90,693.60
  4. Step 4: Simplify right side
    217,075.20x = 29,530,997,038.08
  5. Step 5: Solve for x
    x = 29,530,997,038.08/217,075.20
  6. Step 6: Final answer
    x = 136,040.40

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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.