Home / 128,459,859.93-177,269,864.85-69,721,263.81

Finding the Fourth Proportional to 128,459,859.93, 177,269,864.85 and 69,721,263.81

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Solution

The fourth proportional to 128,459,859.93, 177,269,864.85 and 69,721,263.81 is: 96,212,770.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,459,859.93 : 177,269,864.85 = 69,721,263.81 : x
  2. Step 2: Convert to fraction form
    128,459,859.93/177,269,864.85 = 69,721,263.81/x
  3. Step 3: Cross multiply
    128,459,859.93x = 177,269,864.85 × 69,721,263.81
  4. Step 4: Simplify right side
    128,459,859.93x = 12,359,479,012,769,896
  5. Step 5: Solve for x
    x = 12,359,479,012,769,896/128,459,859.93
  6. Step 6: Final answer
    x = 96,212,770.43

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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.