Home / 78,166,458.21-117,250,685.13-20,658,232.50

Finding the Fourth Proportional to 78,166,458.21, 117,250,685.13 and 20,658,232.50

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Solution

The fourth proportional to 78,166,458.21, 117,250,685.13 and 20,658,232.50 is: 30,987,612.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166,458.21 : 117,250,685.13 = 20,658,232.50 : x
  2. Step 2: Convert to fraction form
    78,166,458.21/117,250,685.13 = 20,658,232.50/x
  3. Step 3: Cross multiply
    78,166,458.21x = 117,250,685.13 × 20,658,232.50
  4. Step 4: Simplify right side
    78,166,458.21x = 2,422,191,914,199,832.50
  5. Step 5: Solve for x
    x = 2,422,191,914,199,832.50/78,166,458.21
  6. Step 6: Final answer
    x = 30,987,612.46

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1.5x scale

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.