Home / 115,920,128.40-173,880,192.60-81,907,904.40

Finding the Fourth Proportional to 115,920,128.40, 173,880,192.60 and 81,907,904.40

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Solution

The fourth proportional to 115,920,128.40, 173,880,192.60 and 81,907,904.40 is: 122,861,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,920,128.40 : 173,880,192.60 = 81,907,904.40 : x
  2. Step 2: Convert to fraction form
    115,920,128.40/173,880,192.60 = 81,907,904.40/x
  3. Step 3: Cross multiply
    115,920,128.40x = 173,880,192.60 × 81,907,904.40
  4. Step 4: Simplify right side
    115,920,128.40x = 14,242,162,192,534,388
  5. Step 5: Solve for x
    x = 14,242,162,192,534,388/115,920,128.40
  6. Step 6: Final answer
    x = 122,861,856.60

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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.