Home / 128,957,673.20-193,436,509.80-99,732,354.80

Finding the Fourth Proportional to 128,957,673.20, 193,436,509.80 and 99,732,354.80

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Solution

The fourth proportional to 128,957,673.20, 193,436,509.80 and 99,732,354.80 is: 149,598,532.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,957,673.20 : 193,436,509.80 = 99,732,354.80 : x
  2. Step 2: Convert to fraction form
    128,957,673.20/193,436,509.80 = 99,732,354.80/x
  3. Step 3: Cross multiply
    128,957,673.20x = 193,436,509.80 × 99,732,354.80
  4. Step 4: Simplify right side
    128,957,673.20x = 19,291,878,626,647,276
  5. Step 5: Solve for x
    x = 19,291,878,626,647,276/128,957,673.20
  6. Step 6: Final answer
    x = 149,598,532.20

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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.