Home / 83,990,515.20-125,985,772.80-69,641,608.20

Finding the Fourth Proportional to 83,990,515.20, 125,985,772.80 and 69,641,608.20

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Solution

The fourth proportional to 83,990,515.20, 125,985,772.80 and 69,641,608.20 is: 104,462,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,990,515.20 : 125,985,772.80 = 69,641,608.20 : x
  2. Step 2: Convert to fraction form
    83,990,515.20/125,985,772.80 = 69,641,608.20/x
  3. Step 3: Cross multiply
    83,990,515.20x = 125,985,772.80 × 69,641,608.20
  4. Step 4: Simplify right side
    83,990,515.20x = 8,773,851,828,111,817
  5. Step 5: Solve for x
    x = 8,773,851,828,111,817/83,990,515.20
  6. Step 6: Final answer
    x = 104,462,412.30

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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.