Home / 115,459,728.20-159,274,017.06-71,392,640.48

Finding the Fourth Proportional to 115,459,728.20, 159,274,017.06 and 71,392,640.48

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Solution

The fourth proportional to 115,459,728.20, 159,274,017.06 and 71,392,640.48 is: 98,484,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,459,728.20 : 159,274,017.06 = 71,392,640.48 : x
  2. Step 2: Convert to fraction form
    115,459,728.20/159,274,017.06 = 71,392,640.48/x
  3. Step 3: Cross multiply
    115,459,728.20x = 159,274,017.06 × 71,392,640.48
  4. Step 4: Simplify right side
    115,459,728.20x = 11,370,992,637,769,968
  5. Step 5: Solve for x
    x = 11,370,992,637,769,968/115,459,728.20
  6. Step 6: Final answer
    x = 98,484,491.65

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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.