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Finding the Fourth Proportional to 130,699.62, 180,279.54 and 103,799.52

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Solution

The fourth proportional to 130,699.62, 180,279.54 and 103,799.52 is: 143,175.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,699.62 : 180,279.54 = 103,799.52 : x
  2. Step 2: Convert to fraction form
    130,699.62/180,279.54 = 103,799.52/x
  3. Step 3: Cross multiply
    130,699.62x = 180,279.54 × 103,799.52
  4. Step 4: Simplify right side
    130,699.62x = 18,712,929,717.82
  5. Step 5: Solve for x
    x = 18,712,929,717.82/130,699.62
  6. Step 6: Final answer
    x = 143,175.09

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1.5x scale

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.