Home / 85,840,111.70-128,760,167.55-82,492,033.40

Finding the Fourth Proportional to 85,840,111.70, 128,760,167.55 and 82,492,033.40

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Solution

The fourth proportional to 85,840,111.70, 128,760,167.55 and 82,492,033.40 is: 123,738,050.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,840,111.70 : 128,760,167.55 = 82,492,033.40 : x
  2. Step 2: Convert to fraction form
    85,840,111.70/128,760,167.55 = 82,492,033.40/x
  3. Step 3: Cross multiply
    85,840,111.70x = 128,760,167.55 × 82,492,033.40
  4. Step 4: Simplify right side
    85,840,111.70x = 10,621,688,042,124,196
  5. Step 5: Solve for x
    x = 10,621,688,042,124,196/85,840,111.70
  6. Step 6: Final answer
    x = 123,738,050.10

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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.