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Finding the Fourth Proportional to 155,955.16, 215,218.38 and 88,887.16

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Solution

The fourth proportional to 155,955.16, 215,218.38 and 88,887.16 is: 122,664.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,955.16 : 215,218.38 = 88,887.16 : x
  2. Step 2: Convert to fraction form
    155,955.16/215,218.38 = 88,887.16/x
  3. Step 3: Cross multiply
    155,955.16x = 215,218.38 × 88,887.16
  4. Step 4: Simplify right side
    155,955.16x = 19,130,150,578.00
  5. Step 5: Solve for x
    x = 19,130,150,578.00/155,955.16
  6. Step 6: Final answer
    x = 122,664.43

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1.5x scale

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.