Home / 157,849.48-217,824.16-86,215.66

Finding the Fourth Proportional to 157,849.48, 217,824.16 and 86,215.66

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Solution

The fourth proportional to 157,849.48, 217,824.16 and 86,215.66 is: 118,973.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,849.48 : 217,824.16 = 86,215.66 : x
  2. Step 2: Convert to fraction form
    157,849.48/217,824.16 = 86,215.66/x
  3. Step 3: Cross multiply
    157,849.48x = 217,824.16 × 86,215.66
  4. Step 4: Simplify right side
    157,849.48x = 18,779,853,718.35
  5. Step 5: Solve for x
    x = 18,779,853,718.35/157,849.48
  6. Step 6: Final answer
    x = 118,973.17

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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.