Home / 154,421.52-213,105.66-90,762.72

Finding the Fourth Proportional to 154,421.52, 213,105.66 and 90,762.72

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Solution

The fourth proportional to 154,421.52, 213,105.66 and 90,762.72 is: 125,254.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,421.52 : 213,105.66 = 90,762.72 : x
  2. Step 2: Convert to fraction form
    154,421.52/213,105.66 = 90,762.72/x
  3. Step 3: Cross multiply
    154,421.52x = 213,105.66 × 90,762.72
  4. Step 4: Simplify right side
    154,421.52x = 19,342,049,349.00
  5. Step 5: Solve for x
    x = 19,342,049,349.00/154,421.52
  6. Step 6: Final answer
    x = 125,254.88

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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.