Home / 91,389.06-126,116.19-51,102.90

Finding the Fourth Proportional to 91,389.06, 126,116.19 and 51,102.90

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Solution

The fourth proportional to 91,389.06, 126,116.19 and 51,102.90 is: 70,521.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,389.06 : 126,116.19 = 51,102.90 : x
  2. Step 2: Convert to fraction form
    91,389.06/126,116.19 = 51,102.90/x
  3. Step 3: Cross multiply
    91,389.06x = 126,116.19 × 51,102.90
  4. Step 4: Simplify right side
    91,389.06x = 6,444,903,045.95
  5. Step 5: Solve for x
    x = 6,444,903,045.95/91,389.06
  6. Step 6: Final answer
    x = 70,521.60

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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.