Home / 103,567.18-155,252.35-66,021.86

Finding the Fourth Proportional to 103,567.18, 155,252.35 and 66,021.86

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Solution

The fourth proportional to 103,567.18, 155,252.35 and 66,021.86 is: 98,970.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,567.18 : 155,252.35 = 66,021.86 : x
  2. Step 2: Convert to fraction form
    103,567.18/155,252.35 = 66,021.86/x
  3. Step 3: Cross multiply
    103,567.18x = 155,252.35 × 66,021.86
  4. Step 4: Simplify right side
    103,567.18x = 10,250,048,916.37
  5. Step 5: Solve for x
    x = 10,250,048,916.37/103,567.18
  6. Step 6: Final answer
    x = 98,970.05

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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.