Home / 103,645.56-155,465.46-72,501.24

Finding the Fourth Proportional to 103,645.56, 155,465.46 and 72,501.24

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Solution

The fourth proportional to 103,645.56, 155,465.46 and 72,501.24 is: 108,749.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,645.56 : 155,465.46 = 72,501.24 : x
  2. Step 2: Convert to fraction form
    103,645.56/155,465.46 = 72,501.24/x
  3. Step 3: Cross multiply
    103,645.56x = 155,465.46 × 72,501.24
  4. Step 4: Simplify right side
    103,645.56x = 11,271,438,627.17
  5. Step 5: Solve for x
    x = 11,271,438,627.17/103,645.56
  6. Step 6: Final answer
    x = 108,749.85

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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.