Home / 130,521.16-180,151.86-80,191

Finding the Fourth Proportional to 130,521.16, 180,151.86 and 80,191

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Solution

The fourth proportional to 130,521.16, 180,151.86 and 80,191 is: 110,683.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,521.16 : 180,151.86 = 80,191 : x
  2. Step 2: Convert to fraction form
    130,521.16/180,151.86 = 80,191/x
  3. Step 3: Cross multiply
    130,521.16x = 180,151.86 × 80,191
  4. Step 4: Simplify right side
    130,521.16x = 14,446,557,805.26
  5. Step 5: Solve for x
    x = 14,446,557,805.26/130,521.16
  6. Step 6: Final answer
    x = 110,683.65

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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.