Home / 128,726,468.80-193,089,703.20-74,306,910.40

Finding the Fourth Proportional to 128,726,468.80, 193,089,703.20 and 74,306,910.40

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Solution

The fourth proportional to 128,726,468.80, 193,089,703.20 and 74,306,910.40 is: 111,460,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,726,468.80 : 193,089,703.20 = 74,306,910.40 : x
  2. Step 2: Convert to fraction form
    128,726,468.80/193,089,703.20 = 74,306,910.40/x
  3. Step 3: Cross multiply
    128,726,468.80x = 193,089,703.20 × 74,306,910.40
  4. Step 4: Simplify right side
    128,726,468.80x = 14,347,899,274,844,994
  5. Step 5: Solve for x
    x = 14,347,899,274,844,994/128,726,468.80
  6. Step 6: Final answer
    x = 111,460,365.60

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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.