Home / 115,101,201.40-172,651,802.10-78,821,495.80

Finding the Fourth Proportional to 115,101,201.40, 172,651,802.10 and 78,821,495.80

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Solution

The fourth proportional to 115,101,201.40, 172,651,802.10 and 78,821,495.80 is: 118,232,243.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,101,201.40 : 172,651,802.10 = 78,821,495.80 : x
  2. Step 2: Convert to fraction form
    115,101,201.40/172,651,802.10 = 78,821,495.80/x
  3. Step 3: Cross multiply
    115,101,201.40x = 172,651,802.10 × 78,821,495.80
  4. Step 4: Simplify right side
    115,101,201.40x = 13,608,673,294,087,580
  5. Step 5: Solve for x
    x = 13,608,673,294,087,580/115,101,201.40
  6. Step 6: Final answer
    x = 118,232,243.70

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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.