Home / 128,747.04-193,116.84-86,902.32

Finding the Fourth Proportional to 128,747.04, 193,116.84 and 86,902.32

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Solution

The fourth proportional to 128,747.04, 193,116.84 and 86,902.32 is: 130,350.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,747.04 : 193,116.84 = 86,902.32 : x
  2. Step 2: Convert to fraction form
    128,747.04/193,116.84 = 86,902.32/x
  3. Step 3: Cross multiply
    128,747.04x = 193,116.84 × 86,902.32
  4. Step 4: Simplify right side
    128,747.04x = 16,782,301,427.07
  5. Step 5: Solve for x
    x = 16,782,301,427.07/128,747.04
  6. Step 6: Final answer
    x = 130,350.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.