Home / 91,439.64-126,186.12-51,153.21

Finding the Fourth Proportional to 91,439.64, 126,186.12 and 51,153.21

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Solution

The fourth proportional to 91,439.64, 126,186.12 and 51,153.21 is: 70,591.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,439.64 : 126,186.12 = 51,153.21 : x
  2. Step 2: Convert to fraction form
    91,439.64/126,186.12 = 51,153.21/x
  3. Step 3: Cross multiply
    91,439.64x = 126,186.12 × 51,153.21
  4. Step 4: Simplify right side
    91,439.64x = 6,454,825,095.45
  5. Step 5: Solve for x
    x = 6,454,825,095.45/91,439.64
  6. Step 6: Final answer
    x = 70,591.10

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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.