Home / 105,644.83-145,791.02-57,897.16

Finding the Fourth Proportional to 105,644.83, 145,791.02 and 57,897.16

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Solution

The fourth proportional to 105,644.83, 145,791.02 and 57,897.16 is: 79,898.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,644.83 : 145,791.02 = 57,897.16 : x
  2. Step 2: Convert to fraction form
    105,644.83/145,791.02 = 57,897.16/x
  3. Step 3: Cross multiply
    105,644.83x = 145,791.02 × 57,897.16
  4. Step 4: Simplify right side
    105,644.83x = 8,440,886,011.50
  5. Step 5: Solve for x
    x = 8,440,886,011.50/105,644.83
  6. Step 6: Final answer
    x = 79,898.71

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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.