Home / 105,235.04-145,170.42-71,244.74

Finding the Fourth Proportional to 105,235.04, 145,170.42 and 71,244.74

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Solution

The fourth proportional to 105,235.04, 145,170.42 and 71,244.74 is: 98,281.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,235.04 : 145,170.42 = 71,244.74 : x
  2. Step 2: Convert to fraction form
    105,235.04/145,170.42 = 71,244.74/x
  3. Step 3: Cross multiply
    105,235.04x = 145,170.42 × 71,244.74
  4. Step 4: Simplify right side
    105,235.04x = 10,342,628,828.59
  5. Step 5: Solve for x
    x = 10,342,628,828.59/105,235.04
  6. Step 6: Final answer
    x = 98,281.23

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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.