Home / 85,544,331.40-128,316,497.10-80,505,483.40

Finding the Fourth Proportional to 85,544,331.40, 128,316,497.10 and 80,505,483.40

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Solution

The fourth proportional to 85,544,331.40, 128,316,497.10 and 80,505,483.40 is: 120,758,225.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,544,331.40 : 128,316,497.10 = 80,505,483.40 : x
  2. Step 2: Convert to fraction form
    85,544,331.40/128,316,497.10 = 80,505,483.40/x
  3. Step 3: Cross multiply
    85,544,331.40x = 128,316,497.10 × 80,505,483.40
  4. Step 4: Simplify right side
    85,544,331.40x = 10,330,181,627,230,198
  5. Step 5: Solve for x
    x = 10,330,181,627,230,198/85,544,331.40
  6. Step 6: Final answer
    x = 120,758,225.10

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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.