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Finding the Fourth Proportional to 91,168.95, 136,303.86 and 77,283.93

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Solution

The fourth proportional to 91,168.95, 136,303.86 and 77,283.93 is: 115,544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,168.95 : 136,303.86 = 77,283.93 : x
  2. Step 2: Convert to fraction form
    91,168.95/136,303.86 = 77,283.93/x
  3. Step 3: Cross multiply
    91,168.95x = 136,303.86 × 77,283.93
  4. Step 4: Simplify right side
    91,168.95x = 10,534,097,974.97
  5. Step 5: Solve for x
    x = 10,534,097,974.97/91,168.95
  6. Step 6: Final answer
    x = 115,544.80

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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.