Home / 130,590.82-180,256.35-74,039.86

Finding the Fourth Proportional to 130,590.82, 180,256.35 and 74,039.86

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Solution

The fourth proportional to 130,590.82, 180,256.35 and 74,039.86 is: 102,198.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,590.82 : 180,256.35 = 74,039.86 : x
  2. Step 2: Convert to fraction form
    130,590.82/180,256.35 = 74,039.86/x
  3. Step 3: Cross multiply
    130,590.82x = 180,256.35 × 74,039.86
  4. Step 4: Simplify right side
    130,590.82x = 13,346,154,918.11
  5. Step 5: Solve for x
    x = 13,346,154,918.11/130,590.82
  6. Step 6: Final answer
    x = 102,198.26

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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.