Home / 78,168,076.20-117,252,114.30-65,626,943.40

Finding the Fourth Proportional to 78,168,076.20, 117,252,114.30 and 65,626,943.40

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Solution

The fourth proportional to 78,168,076.20, 117,252,114.30 and 65,626,943.40 is: 98,440,415.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,168,076.20 : 117,252,114.30 = 65,626,943.40 : x
  2. Step 2: Convert to fraction form
    78,168,076.20/117,252,114.30 = 65,626,943.40/x
  3. Step 3: Cross multiply
    78,168,076.20x = 117,252,114.30 × 65,626,943.40
  4. Step 4: Simplify right side
    78,168,076.20x = 7,694,897,868,696,430
  5. Step 5: Solve for x
    x = 7,694,897,868,696,430/78,168,076.20
  6. Step 6: Final answer
    x = 98,440,415.10

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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.