Home / 103,520.04-155,280.60-28,640.40

Finding the Fourth Proportional to 103,520.04, 155,280.60 and 28,640.40

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Solution

The fourth proportional to 103,520.04, 155,280.60 and 28,640.40 is: 42,960.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,520.04 : 155,280.60 = 28,640.40 : x
  2. Step 2: Convert to fraction form
    103,520.04/155,280.60 = 28,640.40/x
  3. Step 3: Cross multiply
    103,520.04x = 155,280.60 × 28,640.40
  4. Step 4: Simplify right side
    103,520.04x = 4,447,298,496.24
  5. Step 5: Solve for x
    x = 4,447,298,496.24/103,520.04
  6. Step 6: Final answer
    x = 42,960.75

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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.