Home / 115,712.58-159,637.71-72,666.75

Finding the Fourth Proportional to 115,712.58, 159,637.71 and 72,666.75

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Solution

The fourth proportional to 115,712.58, 159,637.71 and 72,666.75 is: 100,251.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,712.58 : 159,637.71 = 72,666.75 : x
  2. Step 2: Convert to fraction form
    115,712.58/159,637.71 = 72,666.75/x
  3. Step 3: Cross multiply
    115,712.58x = 159,637.71 × 72,666.75
  4. Step 4: Simplify right side
    115,712.58x = 11,600,353,563.14
  5. Step 5: Solve for x
    x = 11,600,353,563.14/115,712.58
  6. Step 6: Final answer
    x = 100,251.45

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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.