Home / 85,618.28-118,069.85-77,208.22

Finding the Fourth Proportional to 85,618.28, 118,069.85 and 77,208.22

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Solution

The fourth proportional to 85,618.28, 118,069.85 and 77,208.22 is: 106,472.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,618.28 : 118,069.85 = 77,208.22 : x
  2. Step 2: Convert to fraction form
    85,618.28/118,069.85 = 77,208.22/x
  3. Step 3: Cross multiply
    85,618.28x = 118,069.85 × 77,208.22
  4. Step 4: Simplify right side
    85,618.28x = 9,115,963,294.77
  5. Step 5: Solve for x
    x = 9,115,963,294.77/85,618.28
  6. Step 6: Final answer
    x = 106,472.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.