Home / 155,856.03-215,159.54-102,223.23

Finding the Fourth Proportional to 155,856.03, 215,159.54 and 102,223.23

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Solution

The fourth proportional to 155,856.03, 215,159.54 and 102,223.23 is: 141,119.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,856.03 : 215,159.54 = 102,223.23 : x
  2. Step 2: Convert to fraction form
    155,856.03/215,159.54 = 102,223.23/x
  3. Step 3: Cross multiply
    155,856.03x = 215,159.54 × 102,223.23
  4. Step 4: Simplify right side
    155,856.03x = 21,994,303,144.11
  5. Step 5: Solve for x
    x = 21,994,303,144.11/155,856.03
  6. Step 6: Final answer
    x = 141,119.36

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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.