Home / 137,583.57-189,869.48-77,159.80

Finding the Fourth Proportional to 137,583.57, 189,869.48 and 77,159.80

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Solution

The fourth proportional to 137,583.57, 189,869.48 and 77,159.80 is: 106,482.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,583.57 : 189,869.48 = 77,159.80 : x
  2. Step 2: Convert to fraction form
    137,583.57/189,869.48 = 77,159.80/x
  3. Step 3: Cross multiply
    137,583.57x = 189,869.48 × 77,159.80
  4. Step 4: Simplify right side
    137,583.57x = 14,650,291,102.90
  5. Step 5: Solve for x
    x = 14,650,291,102.90/137,583.57
  6. Step 6: Final answer
    x = 106,482.85

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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.