Home / 145,402,636.78-200,652,409.47-80,212,523.50

Finding the Fourth Proportional to 145,402,636.78, 200,652,409.47 and 80,212,523.50

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Solution

The fourth proportional to 145,402,636.78, 200,652,409.47 and 80,212,523.50 is: 110,691,500.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,402,636.78 : 200,652,409.47 = 80,212,523.50 : x
  2. Step 2: Convert to fraction form
    145,402,636.78/200,652,409.47 = 80,212,523.50/x
  3. Step 3: Cross multiply
    145,402,636.78x = 200,652,409.47 × 80,212,523.50
  4. Step 4: Simplify right side
    145,402,636.78x = 16,094,836,109,943,998
  5. Step 5: Solve for x
    x = 16,094,836,109,943,998/145,402,636.78
  6. Step 6: Final answer
    x = 110,691,500.97

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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.