Home / 105,220,986.80-157,831,480.20-86,325,306.80

Finding the Fourth Proportional to 105,220,986.80, 157,831,480.20 and 86,325,306.80

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Solution

The fourth proportional to 105,220,986.80, 157,831,480.20 and 86,325,306.80 is: 129,487,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,220,986.80 : 157,831,480.20 = 86,325,306.80 : x
  2. Step 2: Convert to fraction form
    105,220,986.80/157,831,480.20 = 86,325,306.80/x
  3. Step 3: Cross multiply
    105,220,986.80x = 157,831,480.20 × 86,325,306.80
  4. Step 4: Simplify right side
    105,220,986.80x = 13,624,850,950,963,124
  5. Step 5: Solve for x
    x = 13,624,850,950,963,124/105,220,986.80
  6. Step 6: Final answer
    x = 129,487,960.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.