Home / 129,482,075.82-178,683,179.32-70,743,479.70

Finding the Fourth Proportional to 129,482,075.82, 178,683,179.32 and 70,743,479.70

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Solution

The fourth proportional to 129,482,075.82, 178,683,179.32 and 70,743,479.70 is: 97,624,862.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,482,075.82 : 178,683,179.32 = 70,743,479.70 : x
  2. Step 2: Convert to fraction form
    129,482,075.82/178,683,179.32 = 70,743,479.70/x
  3. Step 3: Cross multiply
    129,482,075.82x = 178,683,179.32 × 70,743,479.70
  4. Step 4: Simplify right side
    129,482,075.82x = 12,640,669,868,955,880
  5. Step 5: Solve for x
    x = 12,640,669,868,955,880/129,482,075.82
  6. Step 6: Final answer
    x = 97,624,862.66

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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.