Home / 128,042.24-176,698.34-70,681.61

Finding the Fourth Proportional to 128,042.24, 176,698.34 and 70,681.61

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Solution

The fourth proportional to 128,042.24, 176,698.34 and 70,681.61 is: 97,540.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,042.24 : 176,698.34 = 70,681.61 : x
  2. Step 2: Convert to fraction form
    128,042.24/176,698.34 = 70,681.61/x
  3. Step 3: Cross multiply
    128,042.24x = 176,698.34 × 70,681.61
  4. Step 4: Simplify right side
    128,042.24x = 12,489,321,918.63
  5. Step 5: Solve for x
    x = 12,489,321,918.63/128,042.24
  6. Step 6: Final answer
    x = 97,540.64

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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.