Home / 113,385,907.81-156,389,013.48-85,509,792.79

Finding the Fourth Proportional to 113,385,907.81, 156,389,013.48 and 85,509,792.79

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Solution

The fourth proportional to 113,385,907.81, 156,389,013.48 and 85,509,792.79 is: 117,940,513.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,385,907.81 : 156,389,013.48 = 85,509,792.79 : x
  2. Step 2: Convert to fraction form
    113,385,907.81/156,389,013.48 = 85,509,792.79/x
  3. Step 3: Cross multiply
    113,385,907.81x = 156,389,013.48 × 85,509,792.79
  4. Step 4: Simplify right side
    113,385,907.81x = 13,372,792,136,525,370
  5. Step 5: Solve for x
    x = 13,372,792,136,525,370/113,385,907.81
  6. Step 6: Final answer
    x = 117,940,513.03

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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.