Home / 105,220,986.30-157,831,479.45-86,325,306.30

Finding the Fourth Proportional to 105,220,986.30, 157,831,479.45 and 86,325,306.30

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Solution

The fourth proportional to 105,220,986.30, 157,831,479.45 and 86,325,306.30 is: 129,487,959.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,220,986.30 : 157,831,479.45 = 86,325,306.30 : x
  2. Step 2: Convert to fraction form
    105,220,986.30/157,831,479.45 = 86,325,306.30/x
  3. Step 3: Cross multiply
    105,220,986.30x = 157,831,479.45 × 86,325,306.30
  4. Step 4: Simplify right side
    105,220,986.30x = 13,624,850,807,303,404
  5. Step 5: Solve for x
    x = 13,624,850,807,303,404/105,220,986.30
  6. Step 6: Final answer
    x = 129,487,959.45

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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.