Home / 134,503.21-185,607.31-77,139.57

Finding the Fourth Proportional to 134,503.21, 185,607.31 and 77,139.57

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Solution

The fourth proportional to 134,503.21, 185,607.31 and 77,139.57 is: 106,448.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,503.21 : 185,607.31 = 77,139.57 : x
  2. Step 2: Convert to fraction form
    134,503.21/185,607.31 = 77,139.57/x
  3. Step 3: Cross multiply
    134,503.21x = 185,607.31 × 77,139.57
  4. Step 4: Simplify right side
    134,503.21x = 14,317,668,082.26
  5. Step 5: Solve for x
    x = 14,317,668,082.26/134,503.21
  6. Step 6: Final answer
    x = 106,448.52

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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.