Home / 155,851.51-215,075.13-84,231.54

Finding the Fourth Proportional to 155,851.51, 215,075.13 and 84,231.54

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Solution

The fourth proportional to 155,851.51, 215,075.13 and 84,231.54 is: 116,239.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,851.51 : 215,075.13 = 84,231.54 : x
  2. Step 2: Convert to fraction form
    155,851.51/215,075.13 = 84,231.54/x
  3. Step 3: Cross multiply
    155,851.51x = 215,075.13 × 84,231.54
  4. Step 4: Simplify right side
    155,851.51x = 18,116,108,830.64
  5. Step 5: Solve for x
    x = 18,116,108,830.64/155,851.51
  6. Step 6: Final answer
    x = 116,239.54

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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.