Home / 128,268.86-177,012.14-70,907.25

Finding the Fourth Proportional to 128,268.86, 177,012.14 and 70,907.25

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Solution

The fourth proportional to 128,268.86, 177,012.14 and 70,907.25 is: 97,852.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,268.86 : 177,012.14 = 70,907.25 : x
  2. Step 2: Convert to fraction form
    128,268.86/177,012.14 = 70,907.25/x
  3. Step 3: Cross multiply
    128,268.86x = 177,012.14 × 70,907.25
  4. Step 4: Simplify right side
    128,268.86x = 12,551,443,709.48
  5. Step 5: Solve for x
    x = 12,551,443,709.48/128,268.86
  6. Step 6: Final answer
    x = 97,852.62

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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.