Home / 85,064,971.20-127,314,021.60-78,262,526.40

Finding the Fourth Proportional to 85,064,971.20, 127,314,021.60 and 78,262,526.40

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Solution

The fourth proportional to 85,064,971.20, 127,314,021.60 and 78,262,526.40 is: 117,133,020.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,064,971.20 : 127,314,021.60 = 78,262,526.40 : x
  2. Step 2: Convert to fraction form
    85,064,971.20/127,314,021.60 = 78,262,526.40/x
  3. Step 3: Cross multiply
    85,064,971.20x = 127,314,021.60 × 78,262,526.40
  4. Step 4: Simplify right side
    85,064,971.20x = 9,963,916,976,560,170
  5. Step 5: Solve for x
    x = 9,963,916,976,560,170/85,064,971.20
  6. Step 6: Final answer
    x = 117,133,020.04

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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.