Home / 189,136.68-261,008.58-103,095.78

Finding the Fourth Proportional to 189,136.68, 261,008.58 and 103,095.78

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Solution

The fourth proportional to 189,136.68, 261,008.58 and 103,095.78 is: 142,272.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,136.68 : 261,008.58 = 103,095.78 : x
  2. Step 2: Convert to fraction form
    189,136.68/261,008.58 = 103,095.78/x
  3. Step 3: Cross multiply
    189,136.68x = 261,008.58 × 103,095.78
  4. Step 4: Simplify right side
    189,136.68x = 26,908,883,141.79
  5. Step 5: Solve for x
    x = 26,908,883,141.79/189,136.68
  6. Step 6: Final answer
    x = 142,272.16

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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.