Home / 157,778.28-217,732.59-86,158.08

Finding the Fourth Proportional to 157,778.28, 217,732.59 and 86,158.08

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Solution

The fourth proportional to 157,778.28, 217,732.59 and 86,158.08 is: 118,897.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,778.28 : 217,732.59 = 86,158.08 : x
  2. Step 2: Convert to fraction form
    157,778.28/217,732.59 = 86,158.08/x
  3. Step 3: Cross multiply
    157,778.28x = 217,732.59 × 86,158.08
  4. Step 4: Simplify right side
    157,778.28x = 18,759,421,907.83
  5. Step 5: Solve for x
    x = 18,759,421,907.83/157,778.28
  6. Step 6: Final answer
    x = 118,897.37

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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.