Home / 102,987.25-142,124.57-58,275.25

Finding the Fourth Proportional to 102,987.25, 142,124.57 and 58,275.25

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Solution

The fourth proportional to 102,987.25, 142,124.57 and 58,275.25 is: 80,421.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,987.25 : 142,124.57 = 58,275.25 : x
  2. Step 2: Convert to fraction form
    102,987.25/142,124.57 = 58,275.25/x
  3. Step 3: Cross multiply
    102,987.25x = 142,124.57 × 58,275.25
  4. Step 4: Simplify right side
    102,987.25x = 8,282,344,847.89
  5. Step 5: Solve for x
    x = 8,282,344,847.89/102,987.25
  6. Step 6: Final answer
    x = 80,421.07

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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.