Home / 128,048.24-176,706.60-71,458.40

Finding the Fourth Proportional to 128,048.24, 176,706.60 and 71,458.40

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Solution

The fourth proportional to 128,048.24, 176,706.60 and 71,458.40 is: 98,612.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,048.24 : 176,706.60 = 71,458.40 : x
  2. Step 2: Convert to fraction form
    128,048.24/176,706.60 = 71,458.40/x
  3. Step 3: Cross multiply
    128,048.24x = 176,706.60 × 71,458.40
  4. Step 4: Simplify right side
    128,048.24x = 12,627,170,905.44
  5. Step 5: Solve for x
    x = 12,627,170,905.44/128,048.24
  6. Step 6: Final answer
    x = 98,612.61

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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.