Home / 155,901.10-215,138.28-98,571.28

Finding the Fourth Proportional to 155,901.10, 215,138.28 and 98,571.28

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Solution

The fourth proportional to 155,901.10, 215,138.28 and 98,571.28 is: 136,025.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,901.10 : 215,138.28 = 98,571.28 : x
  2. Step 2: Convert to fraction form
    155,901.10/215,138.28 = 98,571.28/x
  3. Step 3: Cross multiply
    155,901.10x = 215,138.28 × 98,571.28
  4. Step 4: Simplify right side
    155,901.10x = 21,206,455,636.60
  5. Step 5: Solve for x
    x = 21,206,455,636.60/155,901.10
  6. Step 6: Final answer
    x = 136,025.05

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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.