Home / 145,633,474.80-218,303,245.80-72,738,140.40

Finding the Fourth Proportional to 145,633,474.80, 218,303,245.80 and 72,738,140.40

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Solution

The fourth proportional to 145,633,474.80, 218,303,245.80 and 72,738,140.40 is: 109,033,806.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,633,474.80 : 218,303,245.80 = 72,738,140.40 : x
  2. Step 2: Convert to fraction form
    145,633,474.80/218,303,245.80 = 72,738,140.40/x
  3. Step 3: Cross multiply
    145,633,474.80x = 218,303,245.80 × 72,738,140.40
  4. Step 4: Simplify right side
    145,633,474.80x = 15,878,972,142,776,112
  5. Step 5: Solve for x
    x = 15,878,972,142,776,112/145,633,474.80
  6. Step 6: Final answer
    x = 109,033,806.72

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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.