Home / 103,435.30-155,152.95-92,281.60

Finding the Fourth Proportional to 103,435.30, 155,152.95 and 92,281.60

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Solution

The fourth proportional to 103,435.30, 155,152.95 and 92,281.60 is: 138,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,435.30 : 155,152.95 = 92,281.60 : x
  2. Step 2: Convert to fraction form
    103,435.30/155,152.95 = 92,281.60/x
  3. Step 3: Cross multiply
    103,435.30x = 155,152.95 × 92,281.60
  4. Step 4: Simplify right side
    103,435.30x = 14,317,762,470.72
  5. Step 5: Solve for x
    x = 14,317,762,470.72/103,435.30
  6. Step 6: Final answer
    x = 138,422.40

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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.