Home / 157,740.30-217,682.34-86,121.93

Finding the Fourth Proportional to 157,740.30, 217,682.34 and 86,121.93

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Solution

The fourth proportional to 157,740.30, 217,682.34 and 86,121.93 is: 118,848.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,740.30 : 217,682.34 = 86,121.93 : x
  2. Step 2: Convert to fraction form
    157,740.30/217,682.34 = 86,121.93/x
  3. Step 3: Cross multiply
    157,740.30x = 217,682.34 × 86,121.93
  4. Step 4: Simplify right side
    157,740.30x = 18,747,223,247.72
  5. Step 5: Solve for x
    x = 18,747,223,247.72/157,740.30
  6. Step 6: Final answer
    x = 118,848.66

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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.