Home / 112,880.55-155,646.31-90,204.00

Finding the Fourth Proportional to 112,880.55, 155,646.31 and 90,204.00

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Solution

The fourth proportional to 112,880.55, 155,646.31 and 90,204.00 is: 124,378.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,880.55 : 155,646.31 = 90,204.00 : x
  2. Step 2: Convert to fraction form
    112,880.55/155,646.31 = 90,204.00/x
  3. Step 3: Cross multiply
    112,880.55x = 155,646.31 × 90,204.00
  4. Step 4: Simplify right side
    112,880.55x = 14,039,919,107.19
  5. Step 5: Solve for x
    x = 14,039,919,107.19/112,880.55
  6. Step 6: Final answer
    x = 124,378.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.