Home / 115,925.15-159,986.84-64,937.06

Finding the Fourth Proportional to 115,925.15, 159,986.84 and 64,937.06

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Solution

The fourth proportional to 115,925.15, 159,986.84 and 64,937.06 is: 89,618.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,925.15 : 159,986.84 = 64,937.06 : x
  2. Step 2: Convert to fraction form
    115,925.15/159,986.84 = 64,937.06/x
  3. Step 3: Cross multiply
    115,925.15x = 159,986.84 × 64,937.06
  4. Step 4: Simplify right side
    115,925.15x = 10,389,073,903.67
  5. Step 5: Solve for x
    x = 10,389,073,903.67/115,925.15
  6. Step 6: Final answer
    x = 89,618.81

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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.