Home / 105,140.40-145,056.48-67,435.44

Finding the Fourth Proportional to 105,140.40, 145,056.48 and 67,435.44

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Solution

The fourth proportional to 105,140.40, 145,056.48 and 67,435.44 is: 93,037.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,140.40 : 145,056.48 = 67,435.44 : x
  2. Step 2: Convert to fraction form
    105,140.40/145,056.48 = 67,435.44/x
  3. Step 3: Cross multiply
    105,140.40x = 145,056.48 × 67,435.44
  4. Step 4: Simplify right side
    105,140.40x = 9,781,947,553.65
  5. Step 5: Solve for x
    x = 9,781,947,553.65/105,140.40
  6. Step 6: Final answer
    x = 93,037.00

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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.