Home / 128,318.05-177,080.05-70,961.25

Finding the Fourth Proportional to 128,318.05, 177,080.05 and 70,961.25

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Solution

The fourth proportional to 128,318.05, 177,080.05 and 70,961.25 is: 97,927.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,318.05 : 177,080.05 = 70,961.25 : x
  2. Step 2: Convert to fraction form
    128,318.05/177,080.05 = 70,961.25/x
  3. Step 3: Cross multiply
    128,318.05x = 177,080.05 × 70,961.25
  4. Step 4: Simplify right side
    128,318.05x = 12,565,821,698.06
  5. Step 5: Solve for x
    x = 12,565,821,698.06/128,318.05
  6. Step 6: Final answer
    x = 97,927.16

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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.