Home / 130,854.64-180,575.04-77,138.68

Finding the Fourth Proportional to 130,854.64, 180,575.04 and 77,138.68

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Solution

The fourth proportional to 130,854.64, 180,575.04 and 77,138.68 is: 106,448.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,854.64 : 180,575.04 = 77,138.68 : x
  2. Step 2: Convert to fraction form
    130,854.64/180,575.04 = 77,138.68/x
  3. Step 3: Cross multiply
    130,854.64x = 180,575.04 × 77,138.68
  4. Step 4: Simplify right side
    130,854.64x = 13,929,320,226.55
  5. Step 5: Solve for x
    x = 13,929,320,226.55/130,854.64
  6. Step 6: Final answer
    x = 106,448.81

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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.