Home / 131,658.18-181,688.04-71,228.91

Finding the Fourth Proportional to 131,658.18, 181,688.04 and 71,228.91

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Solution

The fourth proportional to 131,658.18, 181,688.04 and 71,228.91 is: 98,295.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,658.18 : 181,688.04 = 71,228.91 : x
  2. Step 2: Convert to fraction form
    131,658.18/181,688.04 = 71,228.91/x
  3. Step 3: Cross multiply
    131,658.18x = 181,688.04 × 71,228.91
  4. Step 4: Simplify right side
    131,658.18x = 12,941,441,049.24
  5. Step 5: Solve for x
    x = 12,941,441,049.24/131,658.18
  6. Step 6: Final answer
    x = 98,295.76

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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.