Home / 128,022.12-176,670.72-71,433.63

Finding the Fourth Proportional to 128,022.12, 176,670.72 and 71,433.63

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Solution

The fourth proportional to 128,022.12, 176,670.72 and 71,433.63 is: 98,578.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,022.12 : 176,670.72 = 71,433.63 : x
  2. Step 2: Convert to fraction form
    128,022.12/176,670.72 = 71,433.63/x
  3. Step 3: Cross multiply
    128,022.12x = 176,670.72 × 71,433.63
  4. Step 4: Simplify right side
    128,022.12x = 12,620,230,844.31
  5. Step 5: Solve for x
    x = 12,620,230,844.31/128,022.12
  6. Step 6: Final answer
    x = 98,578.52

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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.