Home / 208,175,416.80-312,039,176.40-78,733,010.40

Finding the Fourth Proportional to 208,175,416.80, 312,039,176.40 and 78,733,010.40

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Solution

The fourth proportional to 208,175,416.80, 312,039,176.40 and 78,733,010.40 is: 118,014,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,175,416.80 : 312,039,176.40 = 78,733,010.40 : x
  2. Step 2: Convert to fraction form
    208,175,416.80/312,039,176.40 = 78,733,010.40/x
  3. Step 3: Cross multiply
    208,175,416.80x = 312,039,176.40 × 78,733,010.40
  4. Step 4: Simplify right side
    208,175,416.80x = 24,567,783,720,708,636
  5. Step 5: Solve for x
    x = 24,567,783,720,708,636/208,175,416.80
  6. Step 6: Final answer
    x = 118,014,817.02

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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.