Home / 157,731.36-217,672.41-86,111.65

Finding the Fourth Proportional to 157,731.36, 217,672.41 and 86,111.65

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Solution

The fourth proportional to 157,731.36, 217,672.41 and 86,111.65 is: 118,835.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,731.36 : 217,672.41 = 86,111.65 : x
  2. Step 2: Convert to fraction form
    157,731.36/217,672.41 = 86,111.65/x
  3. Step 3: Cross multiply
    157,731.36x = 217,672.41 × 86,111.65
  4. Step 4: Simplify right side
    157,731.36x = 18,744,130,384.58
  5. Step 5: Solve for x
    x = 18,744,130,384.58/157,731.36
  6. Step 6: Final answer
    x = 118,835.79

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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.