Home / 99,815,629.60-149,723,444.40-85,202,970.40

Finding the Fourth Proportional to 99,815,629.60, 149,723,444.40 and 85,202,970.40

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Solution

The fourth proportional to 99,815,629.60, 149,723,444.40 and 85,202,970.40 is: 127,804,455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,815,629.60 : 149,723,444.40 = 85,202,970.40 : x
  2. Step 2: Convert to fraction form
    99,815,629.60/149,723,444.40 = 85,202,970.40/x
  3. Step 3: Cross multiply
    99,815,629.60x = 149,723,444.40 × 85,202,970.40
  4. Step 4: Simplify right side
    99,815,629.60x = 12,756,882,201,399,248
  5. Step 5: Solve for x
    x = 12,756,882,201,399,248/99,815,629.60
  6. Step 6: Final answer
    x = 127,804,455.60

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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.