Home / 115,416.99-159,278.13-72,398.30

Finding the Fourth Proportional to 115,416.99, 159,278.13 and 72,398.30

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Solution

The fourth proportional to 115,416.99, 159,278.13 and 72,398.30 is: 99,911.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,416.99 : 159,278.13 = 72,398.30 : x
  2. Step 2: Convert to fraction form
    115,416.99/159,278.13 = 72,398.30/x
  3. Step 3: Cross multiply
    115,416.99x = 159,278.13 × 72,398.30
  4. Step 4: Simplify right side
    115,416.99x = 11,531,465,042.79
  5. Step 5: Solve for x
    x = 11,531,465,042.79/115,416.99
  6. Step 6: Final answer
    x = 99,911.33

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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.