Home / 124,421,646.60-186,632,469.90-78,848,065.80

Finding the Fourth Proportional to 124,421,646.60, 186,632,469.90 and 78,848,065.80

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Solution

The fourth proportional to 124,421,646.60, 186,632,469.90 and 78,848,065.80 is: 118,272,098.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,421,646.60 : 186,632,469.90 = 78,848,065.80 : x
  2. Step 2: Convert to fraction form
    124,421,646.60/186,632,469.90 = 78,848,065.80/x
  3. Step 3: Cross multiply
    124,421,646.60x = 186,632,469.90 × 78,848,065.80
  4. Step 4: Simplify right side
    124,421,646.60x = 14,715,609,267,091,720
  5. Step 5: Solve for x
    x = 14,715,609,267,091,720/124,421,646.60
  6. Step 6: Final answer
    x = 118,272,098.70

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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.