Home / 128,775,946.38-193,164,028.65-31,731,667.26

Finding the Fourth Proportional to 128,775,946.38, 193,164,028.65 and 31,731,667.26

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Solution

The fourth proportional to 128,775,946.38, 193,164,028.65 and 31,731,667.26 is: 47,597,527.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,775,946.38 : 193,164,028.65 = 31,731,667.26 : x
  2. Step 2: Convert to fraction form
    128,775,946.38/193,164,028.65 = 31,731,667.26/x
  3. Step 3: Cross multiply
    128,775,946.38x = 193,164,028.65 × 31,731,667.26
  4. Step 4: Simplify right side
    128,775,946.38x = 6,129,416,683,722,908
  5. Step 5: Solve for x
    x = 6,129,416,683,722,908/128,775,946.38
  6. Step 6: Final answer
    x = 47,597,527.77

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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.