Home / 105,080.90-157,362.15-69,829.70

Finding the Fourth Proportional to 105,080.90, 157,362.15 and 69,829.70

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Solution

The fourth proportional to 105,080.90, 157,362.15 and 69,829.70 is: 104,572.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,080.90 : 157,362.15 = 69,829.70 : x
  2. Step 2: Convert to fraction form
    105,080.90/157,362.15 = 69,829.70/x
  3. Step 3: Cross multiply
    105,080.90x = 157,362.15 × 69,829.70
  4. Step 4: Simplify right side
    105,080.90x = 10,988,551,725.86
  5. Step 5: Solve for x
    x = 10,988,551,725.86/105,080.90
  6. Step 6: Final answer
    x = 104,572.30

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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.