Home / 125,681.18-188,611.72-45,719

Finding the Fourth Proportional to 125,681.18, 188,611.72 and 45,719

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Solution

The fourth proportional to 125,681.18, 188,611.72 and 45,719 is: 68,611.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,681.18 : 188,611.72 = 45,719 : x
  2. Step 2: Convert to fraction form
    125,681.18/188,611.72 = 45,719/x
  3. Step 3: Cross multiply
    125,681.18x = 188,611.72 × 45,719
  4. Step 4: Simplify right side
    125,681.18x = 8,623,139,226.68
  5. Step 5: Solve for x
    x = 8,623,139,226.68/125,681.18
  6. Step 6: Final answer
    x = 68,611.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.