Home / 105,514.98-145,609.76-57,116.67

Finding the Fourth Proportional to 105,514.98, 145,609.76 and 57,116.67

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Solution

The fourth proportional to 105,514.98, 145,609.76 and 57,116.67 is: 78,820.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,514.98 : 145,609.76 = 57,116.67 : x
  2. Step 2: Convert to fraction form
    105,514.98/145,609.76 = 57,116.67/x
  3. Step 3: Cross multiply
    105,514.98x = 145,609.76 × 57,116.67
  4. Step 4: Simplify right side
    105,514.98x = 8,316,744,207.45
  5. Step 5: Solve for x
    x = 8,316,744,207.45/105,514.98
  6. Step 6: Final answer
    x = 78,820.51

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1.5x scale

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.