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Finding the Fourth Proportional to 142,730.87, 213,950.50 and 92,911.01

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Solution

The fourth proportional to 142,730.87, 213,950.50 and 92,911.01 is: 139,271.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,730.87 : 213,950.50 = 92,911.01 : x
  2. Step 2: Convert to fraction form
    142,730.87/213,950.50 = 92,911.01/x
  3. Step 3: Cross multiply
    142,730.87x = 213,950.50 × 92,911.01
  4. Step 4: Simplify right side
    142,730.87x = 19,878,355,742.98
  5. Step 5: Solve for x
    x = 19,878,355,742.98/142,730.87
  6. Step 6: Final answer
    x = 139,271.60

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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.