Home / 105,285.56-157,938.48-42,090.60

Finding the Fourth Proportional to 105,285.56, 157,938.48 and 42,090.60

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Solution

The fourth proportional to 105,285.56, 157,938.48 and 42,090.60 is: 63,139.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,285.56 : 157,938.48 = 42,090.60 : x
  2. Step 2: Convert to fraction form
    105,285.56/157,938.48 = 42,090.60/x
  3. Step 3: Cross multiply
    105,285.56x = 157,938.48 × 42,090.60
  4. Step 4: Simplify right side
    105,285.56x = 6,647,725,386.29
  5. Step 5: Solve for x
    x = 6,647,725,386.29/105,285.56
  6. Step 6: Final answer
    x = 63,139.95

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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.