Home / 155,133.48-214,087.09-86,229.40

Finding the Fourth Proportional to 155,133.48, 214,087.09 and 86,229.40

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Solution

The fourth proportional to 155,133.48, 214,087.09 and 86,229.40 is: 118,998.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,133.48 : 214,087.09 = 86,229.40 : x
  2. Step 2: Convert to fraction form
    155,133.48/214,087.09 = 86,229.40/x
  3. Step 3: Cross multiply
    155,133.48x = 214,087.09 × 86,229.40
  4. Step 4: Simplify right side
    155,133.48x = 18,460,601,318.45
  5. Step 5: Solve for x
    x = 18,460,601,318.45/155,133.48
  6. Step 6: Final answer
    x = 118,998.18

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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.