Home / 129,559,816.27-178,792,559.92-70,822,720.74

Finding the Fourth Proportional to 129,559,816.27, 178,792,559.92 and 70,822,720.74

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Solution

The fourth proportional to 129,559,816.27, 178,792,559.92 and 70,822,720.74 is: 97,735,361.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,559,816.27 : 178,792,559.92 = 70,822,720.74 : x
  2. Step 2: Convert to fraction form
    129,559,816.27/178,792,559.92 = 70,822,720.74/x
  3. Step 3: Cross multiply
    129,559,816.27x = 178,792,559.92 × 70,822,720.74
  4. Step 4: Simplify right side
    129,559,816.27x = 12,662,575,542,362,878
  5. Step 5: Solve for x
    x = 12,662,575,542,362,878/129,559,816.27
  6. Step 6: Final answer
    x = 97,735,361.99

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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.