Home / 85,518.10-128,277.15-84,060.10

Finding the Fourth Proportional to 85,518.10, 128,277.15 and 84,060.10

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Solution

The fourth proportional to 85,518.10, 128,277.15 and 84,060.10 is: 126,090.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,518.10 : 128,277.15 = 84,060.10 : x
  2. Step 2: Convert to fraction form
    85,518.10/128,277.15 = 84,060.10/x
  3. Step 3: Cross multiply
    85,518.10x = 128,277.15 × 84,060.10
  4. Step 4: Simplify right side
    85,518.10x = 10,782,990,056.72
  5. Step 5: Solve for x
    x = 10,782,990,056.72/85,518.10
  6. Step 6: Final answer
    x = 126,090.15

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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.