Home / 208,075,448.80-312,018,694.80-78,640,040.80

Finding the Fourth Proportional to 208,075,448.80, 312,018,694.80 and 78,640,040.80

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Solution

The fourth proportional to 208,075,448.80, 312,018,694.80 and 78,640,040.80 is: 117,924,354.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,075,448.80 : 312,018,694.80 = 78,640,040.80 : x
  2. Step 2: Convert to fraction form
    208,075,448.80/312,018,694.80 = 78,640,040.80/x
  3. Step 3: Cross multiply
    208,075,448.80x = 312,018,694.80 × 78,640,040.80
  4. Step 4: Simplify right side
    208,075,448.80x = 24,537,162,889,434,748
  5. Step 5: Solve for x
    x = 24,537,162,889,434,748/208,075,448.80
  6. Step 6: Final answer
    x = 117,924,354.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.