Home / 136,526.40-188,399.78-76,103.64

Finding the Fourth Proportional to 136,526.40, 188,399.78 and 76,103.64

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Solution

The fourth proportional to 136,526.40, 188,399.78 and 76,103.64 is: 105,019.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,526.40 : 188,399.78 = 76,103.64 : x
  2. Step 2: Convert to fraction form
    136,526.40/188,399.78 = 76,103.64/x
  3. Step 3: Cross multiply
    136,526.40x = 188,399.78 × 76,103.64
  4. Step 4: Simplify right side
    136,526.40x = 14,337,909,033.20
  5. Step 5: Solve for x
    x = 14,337,909,033.20/136,526.40
  6. Step 6: Final answer
    x = 105,019.32

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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.