Home / 78,416,201.80-117,624,302.70-74,889,008.20

Finding the Fourth Proportional to 78,416,201.80, 117,624,302.70 and 74,889,008.20

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Solution

The fourth proportional to 78,416,201.80, 117,624,302.70 and 74,889,008.20 is: 112,333,512.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,416,201.80 : 117,624,302.70 = 74,889,008.20 : x
  2. Step 2: Convert to fraction form
    78,416,201.80/117,624,302.70 = 74,889,008.20/x
  3. Step 3: Cross multiply
    78,416,201.80x = 117,624,302.70 × 74,889,008.20
  4. Step 4: Simplify right side
    78,416,201.80x = 8,808,767,369,419,583
  5. Step 5: Solve for x
    x = 8,808,767,369,419,583/78,416,201.80
  6. Step 6: Final answer
    x = 112,333,512.30

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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.