Home / 103,140.02-142,333.07-57,818.04

Finding the Fourth Proportional to 103,140.02, 142,333.07 and 57,818.04

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Solution

The fourth proportional to 103,140.02, 142,333.07 and 57,818.04 is: 79,788.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,140.02 : 142,333.07 = 57,818.04 : x
  2. Step 2: Convert to fraction form
    103,140.02/142,333.07 = 57,818.04/x
  3. Step 3: Cross multiply
    103,140.02x = 142,333.07 × 57,818.04
  4. Step 4: Simplify right side
    103,140.02x = 8,229,418,845.49
  5. Step 5: Solve for x
    x = 8,229,418,845.49/103,140.02
  6. Step 6: Final answer
    x = 79,788.81

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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.