Home / 136,962.80-189,006.36-76,534.64

Finding the Fourth Proportional to 136,962.80, 189,006.36 and 76,534.64

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Solution

The fourth proportional to 136,962.80, 189,006.36 and 76,534.64 is: 105,616.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,962.80 : 189,006.36 = 76,534.64 : x
  2. Step 2: Convert to fraction form
    136,962.80/189,006.36 = 76,534.64/x
  3. Step 3: Cross multiply
    136,962.80x = 189,006.36 × 76,534.64
  4. Step 4: Simplify right side
    136,962.80x = 14,465,533,720.31
  5. Step 5: Solve for x
    x = 14,465,533,720.31/136,962.80
  6. Step 6: Final answer
    x = 105,616.52

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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.