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Finding the Fourth Proportional to 190,140,007.80, 285,210,011.70 and 190,140,007.80

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Solution

The fourth proportional to 190,140,007.80, 285,210,011.70 and 190,140,007.80 is: 285,210,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,140,007.80 : 285,210,011.70 = 190,140,007.80 : x
  2. Step 2: Convert to fraction form
    190,140,007.80/285,210,011.70 = 190,140,007.80/x
  3. Step 3: Cross multiply
    190,140,007.80x = 285,210,011.70 × 190,140,007.80
  4. Step 4: Simplify right side
    190,140,007.80x = 54,229,833,849,276,096
  5. Step 5: Solve for x
    x = 54,229,833,849,276,096/190,140,007.80
  6. Step 6: Final answer
    x = 285,210,011.70

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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.