Home / 129,156,918.22-178,237,941.15-70,419,106.90

Finding the Fourth Proportional to 129,156,918.22, 178,237,941.15 and 70,419,106.90

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Solution

The fourth proportional to 129,156,918.22, 178,237,941.15 and 70,419,106.90 is: 97,179,127.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,156,918.22 : 178,237,941.15 = 70,419,106.90 : x
  2. Step 2: Convert to fraction form
    129,156,918.22/178,237,941.15 = 70,419,106.90/x
  3. Step 3: Cross multiply
    129,156,918.22x = 178,237,941.15 × 70,419,106.90
  4. Step 4: Simplify right side
    129,156,918.22x = 12,551,356,631,477,760
  5. Step 5: Solve for x
    x = 12,551,356,631,477,760/129,156,918.22
  6. Step 6: Final answer
    x = 97,179,127.56

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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.