Home / 145,011,636.54-200,121,338.43-78,928,940.76

Finding the Fourth Proportional to 145,011,636.54, 200,121,338.43 and 78,928,940.76

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Solution

The fourth proportional to 145,011,636.54, 200,121,338.43 and 78,928,940.76 is: 108,924,812.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,011,636.54 : 200,121,338.43 = 78,928,940.76 : x
  2. Step 2: Convert to fraction form
    145,011,636.54/200,121,338.43 = 78,928,940.76/x
  3. Step 3: Cross multiply
    145,011,636.54x = 200,121,338.43 × 78,928,940.76
  4. Step 4: Simplify right side
    145,011,636.54x = 15,795,365,265,753,384
  5. Step 5: Solve for x
    x = 15,795,365,265,753,384/145,011,636.54
  6. Step 6: Final answer
    x = 108,924,812.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.