Home / 145,633,666.30-218,303,533.05-72,738,331.90

Finding the Fourth Proportional to 145,633,666.30, 218,303,533.05 and 72,738,331.90

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Solution

The fourth proportional to 145,633,666.30, 218,303,533.05 and 72,738,331.90 is: 109,034,093.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,633,666.30 : 218,303,533.05 = 72,738,331.90 : x
  2. Step 2: Convert to fraction form
    145,633,666.30/218,303,533.05 = 72,738,331.90/x
  3. Step 3: Cross multiply
    145,633,666.30x = 218,303,533.05 × 72,738,331.90
  4. Step 4: Simplify right side
    145,633,666.30x = 15,879,034,841,933,522
  5. Step 5: Solve for x
    x = 15,879,034,841,933,522/145,633,666.30
  6. Step 6: Final answer
    x = 109,034,093.87

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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.