Home / 91,389.19-126,116.36-51,103.03

Finding the Fourth Proportional to 91,389.19, 126,116.36 and 51,103.03

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Solution

The fourth proportional to 91,389.19, 126,116.36 and 51,103.03 is: 70,521.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,389.19 : 126,116.36 = 51,103.03 : x
  2. Step 2: Convert to fraction form
    91,389.19/126,116.36 = 51,103.03/x
  3. Step 3: Cross multiply
    91,389.19x = 126,116.36 × 51,103.03
  4. Step 4: Simplify right side
    91,389.19x = 6,444,927,497.99
  5. Step 5: Solve for x
    x = 6,444,927,497.99/91,389.19
  6. Step 6: Final answer
    x = 70,521.77

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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.