Home / 128,973,649.60-193,460,474.40-85,926,928.60

Finding the Fourth Proportional to 128,973,649.60, 193,460,474.40 and 85,926,928.60

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Solution

The fourth proportional to 128,973,649.60, 193,460,474.40 and 85,926,928.60 is: 128,890,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,973,649.60 : 193,460,474.40 = 85,926,928.60 : x
  2. Step 2: Convert to fraction form
    128,973,649.60/193,460,474.40 = 85,926,928.60/x
  3. Step 3: Cross multiply
    128,973,649.60x = 193,460,474.40 × 85,926,928.60
  4. Step 4: Simplify right side
    128,973,649.60x = 16,623,464,370,690,928
  5. Step 5: Solve for x
    x = 16,623,464,370,690,928/128,973,649.60
  6. Step 6: Final answer
    x = 128,890,392.90

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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.