Home / 131,611.32-181,635.18-77,869.24

Finding the Fourth Proportional to 131,611.32, 181,635.18 and 77,869.24

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Solution

The fourth proportional to 131,611.32, 181,635.18 and 77,869.24 is: 107,466.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,611.32 : 181,635.18 = 77,869.24 : x
  2. Step 2: Convert to fraction form
    131,611.32/181,635.18 = 77,869.24/x
  3. Step 3: Cross multiply
    131,611.32x = 181,635.18 × 77,869.24
  4. Step 4: Simplify right side
    131,611.32x = 14,143,793,423.86
  5. Step 5: Solve for x
    x = 14,143,793,423.86/131,611.32
  6. Step 6: Final answer
    x = 107,466.39

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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.