Home / 155,810.37-215,018.45-84,190.38

Finding the Fourth Proportional to 155,810.37, 215,018.45 and 84,190.38

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Solution

The fourth proportional to 155,810.37, 215,018.45 and 84,190.38 is: 116,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,810.37 : 215,018.45 = 84,190.38 : x
  2. Step 2: Convert to fraction form
    155,810.37/215,018.45 = 84,190.38/x
  3. Step 3: Cross multiply
    155,810.37x = 215,018.45 × 84,190.38
  4. Step 4: Simplify right side
    155,810.37x = 18,102,485,012.51
  5. Step 5: Solve for x
    x = 18,102,485,012.51/155,810.37
  6. Step 6: Final answer
    x = 116,182.80

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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.