Home / 128,314,878.80-192,472,318.20-42,056,099.60

Finding the Fourth Proportional to 128,314,878.80, 192,472,318.20 and 42,056,099.60

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Solution

The fourth proportional to 128,314,878.80, 192,472,318.20 and 42,056,099.60 is: 63,084,149.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,314,878.80 : 192,472,318.20 = 42,056,099.60 : x
  2. Step 2: Convert to fraction form
    128,314,878.80/192,472,318.20 = 42,056,099.60/x
  3. Step 3: Cross multiply
    128,314,878.80x = 192,472,318.20 × 42,056,099.60
  4. Step 4: Simplify right side
    128,314,878.80x = 8,094,634,984,462,093
  5. Step 5: Solve for x
    x = 8,094,634,984,462,093/128,314,878.80
  6. Step 6: Final answer
    x = 63,084,149.40

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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.