Home / 80,968,021.60-121,452,032.40-73,157,807.20

Finding the Fourth Proportional to 80,968,021.60, 121,452,032.40 and 73,157,807.20

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Solution

The fourth proportional to 80,968,021.60, 121,452,032.40 and 73,157,807.20 is: 109,736,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,968,021.60 : 121,452,032.40 = 73,157,807.20 : x
  2. Step 2: Convert to fraction form
    80,968,021.60/121,452,032.40 = 73,157,807.20/x
  3. Step 3: Cross multiply
    80,968,021.60x = 121,452,032.40 × 73,157,807.20
  4. Step 4: Simplify right side
    80,968,021.60x = 8,885,164,370,367,354
  5. Step 5: Solve for x
    x = 8,885,164,370,367,354/80,968,021.60
  6. Step 6: Final answer
    x = 109,736,710.80

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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.