Home / 128,043.36-176,705.04-71,453.28

Finding the Fourth Proportional to 128,043.36, 176,705.04 and 71,453.28

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Solution

The fourth proportional to 128,043.36, 176,705.04 and 71,453.28 is: 98,608.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,043.36 : 176,705.04 = 71,453.28 : x
  2. Step 2: Convert to fraction form
    128,043.36/176,705.04 = 71,453.28/x
  3. Step 3: Cross multiply
    128,043.36x = 176,705.04 × 71,453.28
  4. Step 4: Simplify right side
    128,043.36x = 12,626,154,700.53
  5. Step 5: Solve for x
    x = 12,626,154,700.53/128,043.36
  6. Step 6: Final answer
    x = 98,608.43

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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.