Home / 128,003.74-176,645.67-71,417.50

Finding the Fourth Proportional to 128,003.74, 176,645.67 and 71,417.50

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Solution

The fourth proportional to 128,003.74, 176,645.67 and 71,417.50 is: 98,556.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,003.74 : 176,645.67 = 71,417.50 : x
  2. Step 2: Convert to fraction form
    128,003.74/176,645.67 = 71,417.50/x
  3. Step 3: Cross multiply
    128,003.74x = 176,645.67 × 71,417.50
  4. Step 4: Simplify right side
    128,003.74x = 12,615,592,137.23
  5. Step 5: Solve for x
    x = 12,615,592,137.23/128,003.74
  6. Step 6: Final answer
    x = 98,556.43

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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.