Home / 121,319,051.20-181,978,576.80-39,437,771.20

Finding the Fourth Proportional to 121,319,051.20, 181,978,576.80 and 39,437,771.20

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Solution

The fourth proportional to 121,319,051.20, 181,978,576.80 and 39,437,771.20 is: 59,156,656.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,319,051.20 : 181,978,576.80 = 39,437,771.20 : x
  2. Step 2: Convert to fraction form
    121,319,051.20/181,978,576.80 = 39,437,771.20/x
  3. Step 3: Cross multiply
    121,319,051.20x = 181,978,576.80 × 39,437,771.20
  4. Step 4: Simplify right side
    121,319,051.20x = 7,176,829,475,140,029
  5. Step 5: Solve for x
    x = 7,176,829,475,140,029/121,319,051.20
  6. Step 6: Final answer
    x = 59,156,656.80

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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.