Home / 128,335.58-177,098-70,971.18

Finding the Fourth Proportional to 128,335.58, 177,098 and 70,971.18

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Solution

The fourth proportional to 128,335.58, 177,098 and 70,971.18 is: 97,937.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,335.58 : 177,098 = 70,971.18 : x
  2. Step 2: Convert to fraction form
    128,335.58/177,098 = 70,971.18/x
  3. Step 3: Cross multiply
    128,335.58x = 177,098 × 70,971.18
  4. Step 4: Simplify right side
    128,335.58x = 12,568,854,035.64
  5. Step 5: Solve for x
    x = 12,568,854,035.64/128,335.58
  6. Step 6: Final answer
    x = 97,937.41

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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.