Home / 129,482,072.19-178,683,174.32-70,743,476.07

Finding the Fourth Proportional to 129,482,072.19, 178,683,174.32 and 70,743,476.07

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Solution

The fourth proportional to 129,482,072.19, 178,683,174.32 and 70,743,476.07 is: 97,624,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,482,072.19 : 178,683,174.32 = 70,743,476.07 : x
  2. Step 2: Convert to fraction form
    129,482,072.19/178,683,174.32 = 70,743,476.07/x
  3. Step 3: Cross multiply
    129,482,072.19x = 178,683,174.32 × 70,743,476.07
  4. Step 4: Simplify right side
    129,482,072.19x = 12,640,668,866,264,840
  5. Step 5: Solve for x
    x = 12,640,668,866,264,840/129,482,072.19
  6. Step 6: Final answer
    x = 97,624,857.65

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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.