Home / 131,853.64-181,914.42-74,485

Finding the Fourth Proportional to 131,853.64, 181,914.42 and 74,485

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Solution

The fourth proportional to 131,853.64, 181,914.42 and 74,485 is: 102,764.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,853.64 : 181,914.42 = 74,485 : x
  2. Step 2: Convert to fraction form
    131,853.64/181,914.42 = 74,485/x
  3. Step 3: Cross multiply
    131,853.64x = 181,914.42 × 74,485
  4. Step 4: Simplify right side
    131,853.64x = 13,549,895,573.70
  5. Step 5: Solve for x
    x = 13,549,895,573.70/131,853.64
  6. Step 6: Final answer
    x = 102,764.67

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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.