Home / 103,503.36-155,021.44-72,477.12

Finding the Fourth Proportional to 103,503.36, 155,021.44 and 72,477.12

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Solution

The fourth proportional to 103,503.36, 155,021.44 and 72,477.12 is: 108,552.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,503.36 : 155,021.44 = 72,477.12 : x
  2. Step 2: Convert to fraction form
    103,503.36/155,021.44 = 72,477.12/x
  3. Step 3: Cross multiply
    103,503.36x = 155,021.44 × 72,477.12
  4. Step 4: Simplify right side
    103,503.36x = 11,235,507,509.45
  5. Step 5: Solve for x
    x = 11,235,507,509.45/103,503.36
  6. Step 6: Final answer
    x = 108,552.10

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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.