Home / 78,130,865.12-117,196,236.12-23,543,451.28

Finding the Fourth Proportional to 78,130,865.12, 117,196,236.12 and 23,543,451.28

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Solution

The fourth proportional to 78,130,865.12, 117,196,236.12 and 23,543,451.28 is: 35,315,158.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,130,865.12 : 117,196,236.12 = 23,543,451.28 : x
  2. Step 2: Convert to fraction form
    78,130,865.12/117,196,236.12 = 23,543,451.28/x
  3. Step 3: Cross multiply
    78,130,865.12x = 117,196,236.12 × 23,543,451.28
  4. Step 4: Simplify right side
    78,130,865.12x = 2,759,203,875,290,596.50
  5. Step 5: Solve for x
    x = 2,759,203,875,290,596.50/78,130,865.12
  6. Step 6: Final answer
    x = 35,315,158.37

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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.