Home / 105,108.75-145,053.15-57,365.16

Finding the Fourth Proportional to 105,108.75, 145,053.15 and 57,365.16

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Solution

The fourth proportional to 105,108.75, 145,053.15 and 57,365.16 is: 79,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,108.75 : 145,053.15 = 57,365.16 : x
  2. Step 2: Convert to fraction form
    105,108.75/145,053.15 = 57,365.16/x
  3. Step 3: Cross multiply
    105,108.75x = 145,053.15 × 57,365.16
  4. Step 4: Simplify right side
    105,108.75x = 8,320,997,158.25
  5. Step 5: Solve for x
    x = 8,320,997,158.25/105,108.75
  6. Step 6: Final answer
    x = 79,165.60

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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.