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Finding the Fourth Proportional to 103,617.05, 155,425.58 and 101,313.05

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Solution

The fourth proportional to 103,617.05, 155,425.58 and 101,313.05 is: 151,969.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,617.05 : 155,425.58 = 101,313.05 : x
  2. Step 2: Convert to fraction form
    103,617.05/155,425.58 = 101,313.05/x
  3. Step 3: Cross multiply
    103,617.05x = 155,425.58 × 101,313.05
  4. Step 4: Simplify right side
    103,617.05x = 15,746,639,557.82
  5. Step 5: Solve for x
    x = 15,746,639,557.82/103,617.05
  6. Step 6: Final answer
    x = 151,969.58

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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.