Home / 129,240,431.40-178,351,550.70-70,503,081

Finding the Fourth Proportional to 129,240,431.40, 178,351,550.70 and 70,503,081

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Solution

The fourth proportional to 129,240,431.40, 178,351,550.70 and 70,503,081 is: 97,294,118.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,240,431.40 : 178,351,550.70 = 70,503,081 : x
  2. Step 2: Convert to fraction form
    129,240,431.40/178,351,550.70 = 70,503,081/x
  3. Step 3: Cross multiply
    129,240,431.40x = 178,351,550.70 × 70,503,081
  4. Step 4: Simplify right side
    129,240,431.40x = 12,574,333,825,477,706
  5. Step 5: Solve for x
    x = 12,574,333,825,477,706/129,240,431.40
  6. Step 6: Final answer
    x = 97,294,118.33

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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.