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Finding the Fourth Proportional to 103,400.60, 155,100.90 and 28,532.30

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Solution

The fourth proportional to 103,400.60, 155,100.90 and 28,532.30 is: 42,798.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,400.60 : 155,100.90 = 28,532.30 : x
  2. Step 2: Convert to fraction form
    103,400.60/155,100.90 = 28,532.30/x
  3. Step 3: Cross multiply
    103,400.60x = 155,100.90 × 28,532.30
  4. Step 4: Simplify right side
    103,400.60x = 4,425,385,409.07
  5. Step 5: Solve for x
    x = 4,425,385,409.07/103,400.60
  6. Step 6: Final answer
    x = 42,798.45

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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.