Home / 155,809.37-215,017.07-84,189.38

Finding the Fourth Proportional to 155,809.37, 215,017.07 and 84,189.38

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Solution

The fourth proportional to 155,809.37, 215,017.07 and 84,189.38 is: 116,181.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,809.37 : 215,017.07 = 84,189.38 : x
  2. Step 2: Convert to fraction form
    155,809.37/215,017.07 = 84,189.38/x
  3. Step 3: Cross multiply
    155,809.37x = 215,017.07 × 84,189.38
  4. Step 4: Simplify right side
    155,809.37x = 18,102,152,316.68
  5. Step 5: Solve for x
    x = 18,102,152,316.68/155,809.37
  6. Step 6: Final answer
    x = 116,181.41

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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.