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Finding the Fourth Proportional to 103,819.10, 145,740.40 and 103,819.10

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Solution

The fourth proportional to 103,819.10, 145,740.40 and 103,819.10 is: 145,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,819.10 : 145,740.40 = 103,819.10 : x
  2. Step 2: Convert to fraction form
    103,819.10/145,740.40 = 103,819.10/x
  3. Step 3: Cross multiply
    103,819.10x = 145,740.40 × 103,819.10
  4. Step 4: Simplify right side
    103,819.10x = 15,130,637,161.64
  5. Step 5: Solve for x
    x = 15,130,637,161.64/103,819.10
  6. Step 6: Final answer
    x = 145,740.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.