Home / 102,986.28-142,088.04-57,657.60

Finding the Fourth Proportional to 102,986.28, 142,088.04 and 57,657.60

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Solution

The fourth proportional to 102,986.28, 142,088.04 and 57,657.60 is: 79,549.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,986.28 : 142,088.04 = 57,657.60 : x
  2. Step 2: Convert to fraction form
    102,986.28/142,088.04 = 57,657.60/x
  3. Step 3: Cross multiply
    102,986.28x = 142,088.04 × 57,657.60
  4. Step 4: Simplify right side
    102,986.28x = 8,192,455,375.10
  5. Step 5: Solve for x
    x = 8,192,455,375.10/102,986.28
  6. Step 6: Final answer
    x = 79,549.00

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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.