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Finding the Fourth Proportional to 127,931.81, 191,802.94 and 61,308.50

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Solution

The fourth proportional to 127,931.81, 191,802.94 and 61,308.50 is: 91,917.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,931.81 : 191,802.94 = 61,308.50 : x
  2. Step 2: Convert to fraction form
    127,931.81/191,802.94 = 61,308.50/x
  3. Step 3: Cross multiply
    127,931.81x = 191,802.94 × 61,308.50
  4. Step 4: Simplify right side
    127,931.81x = 11,759,149,434.70
  5. Step 5: Solve for x
    x = 11,759,149,434.70/127,931.81
  6. Step 6: Final answer
    x = 91,917.33

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.