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Finding the Fourth Proportional to 155,014.55, 213,913.06 and 87,030.27

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Solution

The fourth proportional to 155,014.55, 213,913.06 and 87,030.27 is: 120,097.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,014.55 : 213,913.06 = 87,030.27 : x
  2. Step 2: Convert to fraction form
    155,014.55/213,913.06 = 87,030.27/x
  3. Step 3: Cross multiply
    155,014.55x = 213,913.06 × 87,030.27
  4. Step 4: Simplify right side
    155,014.55x = 18,616,911,368.33
  5. Step 5: Solve for x
    x = 18,616,911,368.33/155,014.55
  6. Step 6: Final answer
    x = 120,097.83

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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.