Home / 137,148.99-189,289.88-80,560.36

Finding the Fourth Proportional to 137,148.99, 189,289.88 and 80,560.36

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Solution

The fourth proportional to 137,148.99, 189,289.88 and 80,560.36 is: 111,187.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,148.99 : 189,289.88 = 80,560.36 : x
  2. Step 2: Convert to fraction form
    137,148.99/189,289.88 = 80,560.36/x
  3. Step 3: Cross multiply
    137,148.99x = 189,289.88 × 80,560.36
  4. Step 4: Simplify right side
    137,148.99x = 15,249,260,877.16
  5. Step 5: Solve for x
    x = 15,249,260,877.16/137,148.99
  6. Step 6: Final answer
    x = 111,187.56

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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.