Home / 139,987.36-193,182.76-76,325.15

Finding the Fourth Proportional to 139,987.36, 193,182.76 and 76,325.15

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Solution

The fourth proportional to 139,987.36, 193,182.76 and 76,325.15 is: 105,328.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,987.36 : 193,182.76 = 76,325.15 : x
  2. Step 2: Convert to fraction form
    139,987.36/193,182.76 = 76,325.15/x
  3. Step 3: Cross multiply
    139,987.36x = 193,182.76 × 76,325.15
  4. Step 4: Simplify right side
    139,987.36x = 14,744,703,283.45
  5. Step 5: Solve for x
    x = 14,744,703,283.45/139,987.36
  6. Step 6: Final answer
    x = 105,328.82

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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.