Home / 145,542,415.80-218,313,623.70-72,770,428.20

Finding the Fourth Proportional to 145,542,415.80, 218,313,623.70 and 72,770,428.20

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Solution

The fourth proportional to 145,542,415.80, 218,313,623.70 and 72,770,428.20 is: 109,155,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,542,415.80 : 218,313,623.70 = 72,770,428.20 : x
  2. Step 2: Convert to fraction form
    145,542,415.80/218,313,623.70 = 72,770,428.20/x
  3. Step 3: Cross multiply
    145,542,415.80x = 218,313,623.70 × 72,770,428.20
  4. Step 4: Simplify right side
    145,542,415.80x = 15,886,775,878,542,668
  5. Step 5: Solve for x
    x = 15,886,775,878,542,668/145,542,415.80
  6. Step 6: Final answer
    x = 109,155,642.30

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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.