Home / 128,055.36-176,716.48-71,466.72

Finding the Fourth Proportional to 128,055.36, 176,716.48 and 71,466.72

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Solution

The fourth proportional to 128,055.36, 176,716.48 and 71,466.72 is: 98,624.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,055.36 : 176,716.48 = 71,466.72 : x
  2. Step 2: Convert to fraction form
    128,055.36/176,716.48 = 71,466.72/x
  3. Step 3: Cross multiply
    128,055.36x = 176,716.48 × 71,466.72
  4. Step 4: Simplify right side
    128,055.36x = 12,629,347,195.55
  5. Step 5: Solve for x
    x = 12,629,347,195.55/128,055.36
  6. Step 6: Final answer
    x = 98,624.12

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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.