Home / 105,113.60-157,670.40-103,385.60

Finding the Fourth Proportional to 105,113.60, 157,670.40 and 103,385.60

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Solution

The fourth proportional to 105,113.60, 157,670.40 and 103,385.60 is: 155,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,113.60 : 157,670.40 = 103,385.60 : x
  2. Step 2: Convert to fraction form
    105,113.60/157,670.40 = 103,385.60/x
  3. Step 3: Cross multiply
    105,113.60x = 157,670.40 × 103,385.60
  4. Step 4: Simplify right side
    105,113.60x = 16,300,848,906.24
  5. Step 5: Solve for x
    x = 16,300,848,906.24/105,113.60
  6. Step 6: Final answer
    x = 155,078.40

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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.