Home / 91,146.56-136,455.05-53,079.75

Finding the Fourth Proportional to 91,146.56, 136,455.05 and 53,079.75

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Solution

The fourth proportional to 91,146.56, 136,455.05 and 53,079.75 is: 79,465.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,146.56 : 136,455.05 = 53,079.75 : x
  2. Step 2: Convert to fraction form
    91,146.56/136,455.05 = 53,079.75/x
  3. Step 3: Cross multiply
    91,146.56x = 136,455.05 × 53,079.75
  4. Step 4: Simplify right side
    91,146.56x = 7,242,999,674.84
  5. Step 5: Solve for x
    x = 7,242,999,674.84/91,146.56
  6. Step 6: Final answer
    x = 79,465.42

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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.