Home / 128,882.16-177,858.48-71,525.35

Finding the Fourth Proportional to 128,882.16, 177,858.48 and 71,525.35

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Solution

The fourth proportional to 128,882.16, 177,858.48 and 71,525.35 is: 98,705.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,882.16 : 177,858.48 = 71,525.35 : x
  2. Step 2: Convert to fraction form
    128,882.16/177,858.48 = 71,525.35/x
  3. Step 3: Cross multiply
    128,882.16x = 177,858.48 × 71,525.35
  4. Step 4: Simplify right side
    128,882.16x = 12,721,390,523.01
  5. Step 5: Solve for x
    x = 12,721,390,523.01/128,882.16
  6. Step 6: Final answer
    x = 98,705.60

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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.