Home / 115,920,006.40-173,880,009.60-81,907,782.40

Finding the Fourth Proportional to 115,920,006.40, 173,880,009.60 and 81,907,782.40

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Solution

The fourth proportional to 115,920,006.40, 173,880,009.60 and 81,907,782.40 is: 122,861,673.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,920,006.40 : 173,880,009.60 = 81,907,782.40 : x
  2. Step 2: Convert to fraction form
    115,920,006.40/173,880,009.60 = 81,907,782.40/x
  3. Step 3: Cross multiply
    115,920,006.40x = 173,880,009.60 × 81,907,782.40
  4. Step 4: Simplify right side
    115,920,006.40x = 14,242,125,990,026,712
  5. Step 5: Solve for x
    x = 14,242,125,990,026,712/115,920,006.40
  6. Step 6: Final answer
    x = 122,861,673.60

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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.