Home / 155,878.02-215,103.60-87,893.10

Finding the Fourth Proportional to 155,878.02, 215,103.60 and 87,893.10

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Solution

The fourth proportional to 155,878.02, 215,103.60 and 87,893.10 is: 121,287.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,878.02 : 215,103.60 = 87,893.10 : x
  2. Step 2: Convert to fraction form
    155,878.02/215,103.60 = 87,893.10/x
  3. Step 3: Cross multiply
    155,878.02x = 215,103.60 × 87,893.10
  4. Step 4: Simplify right side
    155,878.02x = 18,906,122,225.16
  5. Step 5: Solve for x
    x = 18,906,122,225.16/155,878.02
  6. Step 6: Final answer
    x = 121,287.93

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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.