Home / 208,014,132.80-312,021,199.20-105,977,460.80

Finding the Fourth Proportional to 208,014,132.80, 312,021,199.20 and 105,977,460.80

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Solution

The fourth proportional to 208,014,132.80, 312,021,199.20 and 105,977,460.80 is: 158,966,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,014,132.80 : 312,021,199.20 = 105,977,460.80 : x
  2. Step 2: Convert to fraction form
    208,014,132.80/312,021,199.20 = 105,977,460.80/x
  3. Step 3: Cross multiply
    208,014,132.80x = 312,021,199.20 × 105,977,460.80
  4. Step 4: Simplify right side
    208,014,132.80x = 33,067,214,406,986,988
  5. Step 5: Solve for x
    x = 33,067,214,406,986,988/208,014,132.80
  6. Step 6: Final answer
    x = 158,966,191.20

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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.