Home / 128,994,746.92-178,131,050.04-81,967,319.80

Finding the Fourth Proportional to 128,994,746.92, 178,131,050.04 and 81,967,319.80

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Solution

The fourth proportional to 128,994,746.92, 178,131,050.04 and 81,967,319.80 is: 113,190,072.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,994,746.92 : 178,131,050.04 = 81,967,319.80 : x
  2. Step 2: Convert to fraction form
    128,994,746.92/178,131,050.04 = 81,967,319.80/x
  3. Step 3: Cross multiply
    128,994,746.92x = 178,131,050.04 × 81,967,319.80
  4. Step 4: Simplify right side
    128,994,746.92x = 14,600,924,744,938,482
  5. Step 5: Solve for x
    x = 14,600,924,744,938,482/128,994,746.92
  6. Step 6: Final answer
    x = 113,190,072.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.