Home / 155,890.02-215,127.96-84,270.08

Finding the Fourth Proportional to 155,890.02, 215,127.96 and 84,270.08

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Solution

The fourth proportional to 155,890.02, 215,127.96 and 84,270.08 is: 116,292.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,890.02 : 215,127.96 = 84,270.08 : x
  2. Step 2: Convert to fraction form
    155,890.02/215,127.96 = 84,270.08/x
  3. Step 3: Cross multiply
    155,890.02x = 215,127.96 × 84,270.08
  4. Step 4: Simplify right side
    155,890.02x = 18,128,850,399.44
  5. Step 5: Solve for x
    x = 18,128,850,399.44/155,890.02
  6. Step 6: Final answer
    x = 116,292.57

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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.