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Finding the Fourth Proportional to 140,031,820.80, 210,047,731.20 and 140,031,820.80

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Solution

The fourth proportional to 140,031,820.80, 210,047,731.20 and 140,031,820.80 is: 210,047,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,031,820.80 : 210,047,731.20 = 140,031,820.80 : x
  2. Step 2: Convert to fraction form
    140,031,820.80/210,047,731.20 = 140,031,820.80/x
  3. Step 3: Cross multiply
    140,031,820.80x = 210,047,731.20 × 140,031,820.80
  4. Step 4: Simplify right side
    140,031,820.80x = 29,413,366,254,844,968
  5. Step 5: Solve for x
    x = 29,413,366,254,844,968/140,031,820.80
  6. Step 6: Final answer
    x = 210,047,731.20

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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.