Home / 130,971.08-180,761.76-77,269.24

Finding the Fourth Proportional to 130,971.08, 180,761.76 and 77,269.24

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Solution

The fourth proportional to 130,971.08, 180,761.76 and 77,269.24 is: 106,644.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,971.08 : 180,761.76 = 77,269.24 : x
  2. Step 2: Convert to fraction form
    130,971.08/180,761.76 = 77,269.24/x
  3. Step 3: Cross multiply
    130,971.08x = 180,761.76 × 77,269.24
  4. Step 4: Simplify right side
    130,971.08x = 13,967,323,816.26
  5. Step 5: Solve for x
    x = 13,967,323,816.26/130,971.08
  6. Step 6: Final answer
    x = 106,644.34

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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.