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Finding the Fourth Proportional to 188,459.70, 260,071.47 and 103,574.94

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Solution

The fourth proportional to 188,459.70, 260,071.47 and 103,574.94 is: 142,931.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,459.70 : 260,071.47 = 103,574.94 : x
  2. Step 2: Convert to fraction form
    188,459.70/260,071.47 = 103,574.94/x
  3. Step 3: Cross multiply
    188,459.70x = 260,071.47 × 103,574.94
  4. Step 4: Simplify right side
    188,459.70x = 26,936,886,900.96
  5. Step 5: Solve for x
    x = 26,936,886,900.96/188,459.70
  6. Step 6: Final answer
    x = 142,931.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.