Home / 128,200,564.11-176,977,777.94-85,886,982.52

Finding the Fourth Proportional to 128,200,564.11, 176,977,777.94 and 85,886,982.52

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Solution

The fourth proportional to 128,200,564.11, 176,977,777.94 and 85,886,982.52 is: 118,564,901.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,200,564.11 : 176,977,777.94 = 85,886,982.52 : x
  2. Step 2: Convert to fraction form
    128,200,564.11/176,977,777.94 = 85,886,982.52/x
  3. Step 3: Cross multiply
    128,200,564.11x = 176,977,777.94 × 85,886,982.52
  4. Step 4: Simplify right side
    128,200,564.11x = 15,200,087,319,811,418
  5. Step 5: Solve for x
    x = 15,200,087,319,811,418/128,200,564.11
  6. Step 6: Final answer
    x = 118,564,901.99

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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.