Home / 157,721.55-217,656.66-86,102.32

Finding the Fourth Proportional to 157,721.55, 217,656.66 and 86,102.32

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Solution

The fourth proportional to 157,721.55, 217,656.66 and 86,102.32 is: 118,821.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,721.55 : 217,656.66 = 86,102.32 : x
  2. Step 2: Convert to fraction form
    157,721.55/217,656.66 = 86,102.32/x
  3. Step 3: Cross multiply
    157,721.55x = 217,656.66 × 86,102.32
  4. Step 4: Simplify right side
    157,721.55x = 18,740,742,358.73
  5. Step 5: Solve for x
    x = 18,740,742,358.73/157,721.55
  6. Step 6: Final answer
    x = 118,821.69

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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.