Home / 128,871,428.06-177,843,031.31-70,134,797.27

Finding the Fourth Proportional to 128,871,428.06, 177,843,031.31 and 70,134,797.27

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Solution

The fourth proportional to 128,871,428.06, 177,843,031.31 and 70,134,797.27 is: 96,786,270.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,871,428.06 : 177,843,031.31 = 70,134,797.27 : x
  2. Step 2: Convert to fraction form
    128,871,428.06/177,843,031.31 = 70,134,797.27/x
  3. Step 3: Cross multiply
    128,871,428.06x = 177,843,031.31 × 70,134,797.27
  4. Step 4: Simplify right side
    128,871,428.06x = 12,472,984,946,809,112
  5. Step 5: Solve for x
    x = 12,472,984,946,809,112/128,871,428.06
  6. Step 6: Final answer
    x = 96,786,270.89

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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.