Home / 154,439.85-213,533.66-135,264.64

Finding the Fourth Proportional to 154,439.85, 213,533.66 and 135,264.64

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Solution

The fourth proportional to 154,439.85, 213,533.66 and 135,264.64 is: 187,021.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,439.85 : 213,533.66 = 135,264.64 : x
  2. Step 2: Convert to fraction form
    154,439.85/213,533.66 = 135,264.64/x
  3. Step 3: Cross multiply
    154,439.85x = 213,533.66 × 135,264.64
  4. Step 4: Simplify right side
    154,439.85x = 28,883,553,647.78
  5. Step 5: Solve for x
    x = 28,883,553,647.78/154,439.85
  6. Step 6: Final answer
    x = 187,021.38

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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.