Home / 115,495.04-159,514.40-77,703.68

Finding the Fourth Proportional to 115,495.04, 159,514.40 and 77,703.68

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Solution

The fourth proportional to 115,495.04, 159,514.40 and 77,703.68 is: 107,319.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,495.04 : 159,514.40 = 77,703.68 : x
  2. Step 2: Convert to fraction form
    115,495.04/159,514.40 = 77,703.68/x
  3. Step 3: Cross multiply
    115,495.04x = 159,514.40 × 77,703.68
  4. Step 4: Simplify right side
    115,495.04x = 12,394,855,892.99
  5. Step 5: Solve for x
    x = 12,394,855,892.99/115,495.04
  6. Step 6: Final answer
    x = 107,319.38

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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.