Home / 209,931,437.80-314,802,678.30-80,496,029.80

Finding the Fourth Proportional to 209,931,437.80, 314,802,678.30 and 80,496,029.80

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Solution

The fourth proportional to 209,931,437.80, 314,802,678.30 and 80,496,029.80 is: 120,707,817.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,931,437.80 : 314,802,678.30 = 80,496,029.80 : x
  2. Step 2: Convert to fraction form
    209,931,437.80/314,802,678.30 = 80,496,029.80/x
  3. Step 3: Cross multiply
    209,931,437.80x = 314,802,678.30 × 80,496,029.80
  4. Step 4: Simplify right side
    209,931,437.80x = 25,340,365,773,556,612
  5. Step 5: Solve for x
    x = 25,340,365,773,556,612/209,931,437.80
  6. Step 6: Final answer
    x = 120,707,817.94

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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.