Home / 115,920,042.90-173,880,064.35-81,907,818.90

Finding the Fourth Proportional to 115,920,042.90, 173,880,064.35 and 81,907,818.90

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Solution

The fourth proportional to 115,920,042.90, 173,880,064.35 and 81,907,818.90 is: 122,861,728.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,920,042.90 : 173,880,064.35 = 81,907,818.90 : x
  2. Step 2: Convert to fraction form
    115,920,042.90/173,880,064.35 = 81,907,818.90/x
  3. Step 3: Cross multiply
    115,920,042.90x = 173,880,064.35 × 81,907,818.90
  4. Step 4: Simplify right side
    115,920,042.90x = 14,242,136,821,100,146
  5. Step 5: Solve for x
    x = 14,242,136,821,100,146/115,920,042.90
  6. Step 6: Final answer
    x = 122,861,728.35

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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.