Home / 128,121.48-176,808.96-70,762.24

Finding the Fourth Proportional to 128,121.48, 176,808.96 and 70,762.24

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Solution

The fourth proportional to 128,121.48, 176,808.96 and 70,762.24 is: 97,652.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,121.48 : 176,808.96 = 70,762.24 : x
  2. Step 2: Convert to fraction form
    128,121.48/176,808.96 = 70,762.24/x
  3. Step 3: Cross multiply
    128,121.48x = 176,808.96 × 70,762.24
  4. Step 4: Simplify right side
    128,121.48x = 12,511,397,177.63
  5. Step 5: Solve for x
    x = 12,511,397,177.63/128,121.48
  6. Step 6: Final answer
    x = 97,652.61

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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.