Home / 91,151.05-136,726.58-82,840.45

Finding the Fourth Proportional to 91,151.05, 136,726.58 and 82,840.45

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Solution

The fourth proportional to 91,151.05, 136,726.58 and 82,840.45 is: 124,260.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,151.05 : 136,726.58 = 82,840.45 : x
  2. Step 2: Convert to fraction form
    91,151.05/136,726.58 = 82,840.45/x
  3. Step 3: Cross multiply
    91,151.05x = 136,726.58 × 82,840.45
  4. Step 4: Simplify right side
    91,151.05x = 11,326,490,999.96
  5. Step 5: Solve for x
    x = 11,326,490,999.96/91,151.05
  6. Step 6: Final answer
    x = 124,260.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.