Home / 89,155,811.40-133,733,717.10-78,633,279.60

Finding the Fourth Proportional to 89,155,811.40, 133,733,717.10 and 78,633,279.60

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Solution

The fourth proportional to 89,155,811.40, 133,733,717.10 and 78,633,279.60 is: 117,949,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,155,811.40 : 133,733,717.10 = 78,633,279.60 : x
  2. Step 2: Convert to fraction form
    89,155,811.40/133,733,717.10 = 78,633,279.60/x
  3. Step 3: Cross multiply
    89,155,811.40x = 133,733,717.10 × 78,633,279.60
  4. Step 4: Simplify right side
    89,155,811.40x = 10,515,920,768,671,600
  5. Step 5: Solve for x
    x = 10,515,920,768,671,600/89,155,811.40
  6. Step 6: Final answer
    x = 117,949,919.40

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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.