Home / 91,986.40-126,939.72-51,148.90

Finding the Fourth Proportional to 91,986.40, 126,939.72 and 51,148.90

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Solution

The fourth proportional to 91,986.40, 126,939.72 and 51,148.90 is: 70,584.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,986.40 : 126,939.72 = 51,148.90 : x
  2. Step 2: Convert to fraction form
    91,986.40/126,939.72 = 51,148.90/x
  3. Step 3: Cross multiply
    91,986.40x = 126,939.72 × 51,148.90
  4. Step 4: Simplify right side
    91,986.40x = 6,492,827,044.31
  5. Step 5: Solve for x
    x = 6,492,827,044.31/91,986.40
  6. Step 6: Final answer
    x = 70,584.64

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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.