Home / 134,128.24-185,113.32-76,788.88

Finding the Fourth Proportional to 134,128.24, 185,113.32 and 76,788.88

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Solution

The fourth proportional to 134,128.24, 185,113.32 and 76,788.88 is: 105,978.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,128.24 : 185,113.32 = 76,788.88 : x
  2. Step 2: Convert to fraction form
    134,128.24/185,113.32 = 76,788.88/x
  3. Step 3: Cross multiply
    134,128.24x = 185,113.32 × 76,788.88
  4. Step 4: Simplify right side
    134,128.24x = 14,214,644,515.88
  5. Step 5: Solve for x
    x = 14,214,644,515.88/134,128.24
  6. Step 6: Final answer
    x = 105,978.01

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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.