Home / 103,555.36-155,099.68-72,529.12

Finding the Fourth Proportional to 103,555.36, 155,099.68 and 72,529.12

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Solution

The fourth proportional to 103,555.36, 155,099.68 and 72,529.12 is: 108,630.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,555.36 : 155,099.68 = 72,529.12 : x
  2. Step 2: Convert to fraction form
    103,555.36/155,099.68 = 72,529.12/x
  3. Step 3: Cross multiply
    103,555.36x = 155,099.68 × 72,529.12
  4. Step 4: Simplify right side
    103,555.36x = 11,249,243,302.68
  5. Step 5: Solve for x
    x = 11,249,243,302.68/103,555.36
  6. Step 6: Final answer
    x = 108,630.24

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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.