Home / 109,721.16-151,415.10-59,420.16

Finding the Fourth Proportional to 109,721.16, 151,415.10 and 59,420.16

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Solution

The fourth proportional to 109,721.16, 151,415.10 and 59,420.16 is: 81,999.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,721.16 : 151,415.10 = 59,420.16 : x
  2. Step 2: Convert to fraction form
    109,721.16/151,415.10 = 59,420.16/x
  3. Step 3: Cross multiply
    109,721.16x = 151,415.10 × 59,420.16
  4. Step 4: Simplify right side
    109,721.16x = 8,997,109,468.42
  5. Step 5: Solve for x
    x = 8,997,109,468.42/109,721.16
  6. Step 6: Final answer
    x = 81,999.77

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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.