Home / 130,771.81-180,418.68-85,475.95

Finding the Fourth Proportional to 130,771.81, 180,418.68 and 85,475.95

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Solution

The fourth proportional to 130,771.81, 180,418.68 and 85,475.95 is: 117,926.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,771.81 : 180,418.68 = 85,475.95 : x
  2. Step 2: Convert to fraction form
    130,771.81/180,418.68 = 85,475.95/x
  3. Step 3: Cross multiply
    130,771.81x = 180,418.68 × 85,475.95
  4. Step 4: Simplify right side
    130,771.81x = 15,421,458,070.75
  5. Step 5: Solve for x
    x = 15,421,458,070.75/130,771.81
  6. Step 6: Final answer
    x = 117,926.47

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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.