Home / 121,011.10-181,711.05-91,462.30

Finding the Fourth Proportional to 121,011.10, 181,711.05 and 91,462.30

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Solution

The fourth proportional to 121,011.10, 181,711.05 and 91,462.30 is: 137,340.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,011.10 : 181,711.05 = 91,462.30 : x
  2. Step 2: Convert to fraction form
    121,011.10/181,711.05 = 91,462.30/x
  3. Step 3: Cross multiply
    121,011.10x = 181,711.05 × 91,462.30
  4. Step 4: Simplify right side
    121,011.10x = 16,619,710,568.42
  5. Step 5: Solve for x
    x = 16,619,710,568.42/121,011.10
  6. Step 6: Final answer
    x = 137,340.38

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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.