Home / 83,430.69-124,401.84-74,157.81

Finding the Fourth Proportional to 83,430.69, 124,401.84 and 74,157.81

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Solution

The fourth proportional to 83,430.69, 124,401.84 and 74,157.81 is: 110,575.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,430.69 : 124,401.84 = 74,157.81 : x
  2. Step 2: Convert to fraction form
    83,430.69/124,401.84 = 74,157.81/x
  3. Step 3: Cross multiply
    83,430.69x = 124,401.84 × 74,157.81
  4. Step 4: Simplify right side
    83,430.69x = 9,225,368,014.37
  5. Step 5: Solve for x
    x = 9,225,368,014.37/83,430.69
  6. Step 6: Final answer
    x = 110,575.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.