Home / 85,602.22-128,220.45-69,519.27

Finding the Fourth Proportional to 85,602.22, 128,220.45 and 69,519.27

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Solution

The fourth proportional to 85,602.22, 128,220.45 and 69,519.27 is: 104,130.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,602.22 : 128,220.45 = 69,519.27 : x
  2. Step 2: Convert to fraction form
    85,602.22/128,220.45 = 69,519.27/x
  3. Step 3: Cross multiply
    85,602.22x = 128,220.45 × 69,519.27
  4. Step 4: Simplify right side
    85,602.22x = 8,913,792,083.07
  5. Step 5: Solve for x
    x = 8,913,792,083.07/85,602.22
  6. Step 6: Final answer
    x = 104,130.38

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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.