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Finding the Fourth Proportional to 131,697.19, 181,742.12 and 71,267.83

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Solution

The fourth proportional to 131,697.19, 181,742.12 and 71,267.83 is: 98,349.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,697.19 : 181,742.12 = 71,267.83 : x
  2. Step 2: Convert to fraction form
    131,697.19/181,742.12 = 71,267.83/x
  3. Step 3: Cross multiply
    131,697.19x = 181,742.12 × 71,267.83
  4. Step 4: Simplify right side
    131,697.19x = 12,952,366,512.00
  5. Step 5: Solve for x
    x = 12,952,366,512.00/131,697.19
  6. Step 6: Final answer
    x = 98,349.60

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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.