Home / 128,262.81-177,001.37-71,674.18

Finding the Fourth Proportional to 128,262.81, 177,001.37 and 71,674.18

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Solution

The fourth proportional to 128,262.81, 177,001.37 and 71,674.18 is: 98,909.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,262.81 : 177,001.37 = 71,674.18 : x
  2. Step 2: Convert to fraction form
    128,262.81/177,001.37 = 71,674.18/x
  3. Step 3: Cross multiply
    128,262.81x = 177,001.37 × 71,674.18
  4. Step 4: Simplify right side
    128,262.81x = 12,686,427,695.26
  5. Step 5: Solve for x
    x = 12,686,427,695.26/128,262.81
  6. Step 6: Final answer
    x = 98,909.64

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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.