Home / 90,465.72-134,964.08-85,566.84

Finding the Fourth Proportional to 90,465.72, 134,964.08 and 85,566.84

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Solution

The fourth proportional to 90,465.72, 134,964.08 and 85,566.84 is: 127,655.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,465.72 : 134,964.08 = 85,566.84 : x
  2. Step 2: Convert to fraction form
    90,465.72/134,964.08 = 85,566.84/x
  3. Step 3: Cross multiply
    90,465.72x = 134,964.08 × 85,566.84
  4. Step 4: Simplify right side
    90,465.72x = 11,548,449,411.27
  5. Step 5: Solve for x
    x = 11,548,449,411.27/90,465.72
  6. Step 6: Final answer
    x = 127,655.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.