Home / 103,133.79-142,333.34-57,811.05

Finding the Fourth Proportional to 103,133.79, 142,333.34 and 57,811.05

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Solution

The fourth proportional to 103,133.79, 142,333.34 and 57,811.05 is: 79,784.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,133.79 : 142,333.34 = 57,811.05 : x
  2. Step 2: Convert to fraction form
    103,133.79/142,333.34 = 57,811.05/x
  3. Step 3: Cross multiply
    103,133.79x = 142,333.34 × 57,811.05
  4. Step 4: Simplify right side
    103,133.79x = 8,228,439,546.35
  5. Step 5: Solve for x
    x = 8,228,439,546.35/103,133.79
  6. Step 6: Final answer
    x = 79,784.13

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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.