Home / 156,172.80-215,881.65-139,343.84

Finding the Fourth Proportional to 156,172.80, 215,881.65 and 139,343.84

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Solution

The fourth proportional to 156,172.80, 215,881.65 and 139,343.84 is: 192,618.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,172.80 : 215,881.65 = 139,343.84 : x
  2. Step 2: Convert to fraction form
    156,172.80/215,881.65 = 139,343.84/x
  3. Step 3: Cross multiply
    156,172.80x = 215,881.65 × 139,343.84
  4. Step 4: Simplify right side
    156,172.80x = 30,081,777,017.13
  5. Step 5: Solve for x
    x = 30,081,777,017.13/156,172.80
  6. Step 6: Final answer
    x = 192,618.54

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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.