Home / 109,639.49-151,299.43-61,897.28

Finding the Fourth Proportional to 109,639.49, 151,299.43 and 61,897.28

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Solution

The fourth proportional to 109,639.49, 151,299.43 and 61,897.28 is: 85,416.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,639.49 : 151,299.43 = 61,897.28 : x
  2. Step 2: Convert to fraction form
    109,639.49/151,299.43 = 61,897.28/x
  3. Step 3: Cross multiply
    109,639.49x = 151,299.43 × 61,897.28
  4. Step 4: Simplify right side
    109,639.49x = 9,365,022,271.31
  5. Step 5: Solve for x
    x = 9,365,022,271.31/109,639.49
  6. Step 6: Final answer
    x = 85,416.51

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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.