Home / 128,003.24-176,644.98-71,417

Finding the Fourth Proportional to 128,003.24, 176,644.98 and 71,417

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Solution

The fourth proportional to 128,003.24, 176,644.98 and 71,417 is: 98,555.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,003.24 : 176,644.98 = 71,417 : x
  2. Step 2: Convert to fraction form
    128,003.24/176,644.98 = 71,417/x
  3. Step 3: Cross multiply
    128,003.24x = 176,644.98 × 71,417
  4. Step 4: Simplify right side
    128,003.24x = 12,615,454,536.66
  5. Step 5: Solve for x
    x = 12,615,454,536.66/128,003.24
  6. Step 6: Final answer
    x = 98,555.74

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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.