Home / 115,703.36-159,685.42-64,718.92

Finding the Fourth Proportional to 115,703.36, 159,685.42 and 64,718.92

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Solution

The fourth proportional to 115,703.36, 159,685.42 and 64,718.92 is: 89,320.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,703.36 : 159,685.42 = 64,718.92 : x
  2. Step 2: Convert to fraction form
    115,703.36/159,685.42 = 64,718.92/x
  3. Step 3: Cross multiply
    115,703.36x = 159,685.42 × 64,718.92
  4. Step 4: Simplify right side
    115,703.36x = 10,334,668,083.94
  5. Step 5: Solve for x
    x = 10,334,668,083.94/115,703.36
  6. Step 6: Final answer
    x = 89,320.38

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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.