Home / 129,482,074.32-178,683,177.25-70,743,478.20

Finding the Fourth Proportional to 129,482,074.32, 178,683,177.25 and 70,743,478.20

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Solution

The fourth proportional to 129,482,074.32, 178,683,177.25 and 70,743,478.20 is: 97,624,860.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,482,074.32 : 178,683,177.25 = 70,743,478.20 : x
  2. Step 2: Convert to fraction form
    129,482,074.32/178,683,177.25 = 70,743,478.20/x
  3. Step 3: Cross multiply
    129,482,074.32x = 178,683,177.25 × 70,743,478.20
  4. Step 4: Simplify right side
    129,482,074.32x = 12,640,669,454,492,112
  5. Step 5: Solve for x
    x = 12,640,669,454,492,112/129,482,074.32
  6. Step 6: Final answer
    x = 97,624,860.59

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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.