Home / 85,520,878.40-128,132,018.40-73,576,942.40

Finding the Fourth Proportional to 85,520,878.40, 128,132,018.40 and 73,576,942.40

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Solution

The fourth proportional to 85,520,878.40, 128,132,018.40 and 73,576,942.40 is: 110,236,965.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,520,878.40 : 128,132,018.40 = 73,576,942.40 : x
  2. Step 2: Convert to fraction form
    85,520,878.40/128,132,018.40 = 73,576,942.40/x
  3. Step 3: Cross multiply
    85,520,878.40x = 128,132,018.40 × 73,576,942.40
  4. Step 4: Simplify right side
    85,520,878.40x = 9,427,562,137,412,542
  5. Step 5: Solve for x
    x = 9,427,562,137,412,542/85,520,878.40
  6. Step 6: Final answer
    x = 110,236,965.68

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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.