Home / 109,484.32-151,129.30-85,237.24

Finding the Fourth Proportional to 109,484.32, 151,129.30 and 85,237.24

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Solution

The fourth proportional to 109,484.32, 151,129.30 and 85,237.24 is: 117,659.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,484.32 : 151,129.30 = 85,237.24 : x
  2. Step 2: Convert to fraction form
    109,484.32/151,129.30 = 85,237.24/x
  3. Step 3: Cross multiply
    109,484.32x = 151,129.30 × 85,237.24
  4. Step 4: Simplify right side
    109,484.32x = 12,881,844,415.13
  5. Step 5: Solve for x
    x = 12,881,844,415.13/109,484.32
  6. Step 6: Final answer
    x = 117,659.26

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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.