Home / 105,166.96-145,283.93-90,995.20

Finding the Fourth Proportional to 105,166.96, 145,283.93 and 90,995.20

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Solution

The fourth proportional to 105,166.96, 145,283.93 and 90,995.20 is: 125,706.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,166.96 : 145,283.93 = 90,995.20 : x
  2. Step 2: Convert to fraction form
    105,166.96/145,283.93 = 90,995.20/x
  3. Step 3: Cross multiply
    105,166.96x = 145,283.93 × 90,995.20
  4. Step 4: Simplify right side
    105,166.96x = 13,220,139,790.18
  5. Step 5: Solve for x
    x = 13,220,139,790.18/105,166.96
  6. Step 6: Final answer
    x = 125,706.21

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1.5x scale

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.