Home / 128,024.12-176,673.48-71,435.64

Finding the Fourth Proportional to 128,024.12, 176,673.48 and 71,435.64

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Solution

The fourth proportional to 128,024.12, 176,673.48 and 71,435.64 is: 98,581.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,024.12 : 176,673.48 = 71,435.64 : x
  2. Step 2: Convert to fraction form
    128,024.12/176,673.48 = 71,435.64/x
  3. Step 3: Cross multiply
    128,024.12x = 176,673.48 × 71,435.64
  4. Step 4: Simplify right side
    128,024.12x = 12,620,783,114.83
  5. Step 5: Solve for x
    x = 12,620,783,114.83/128,024.12
  6. Step 6: Final answer
    x = 98,581.29

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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.