Home / 115,130.64-158,885.79-64,146.81

Finding the Fourth Proportional to 115,130.64, 158,885.79 and 64,146.81

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Solution

The fourth proportional to 115,130.64, 158,885.79 and 64,146.81 is: 88,525.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,130.64 : 158,885.79 = 64,146.81 : x
  2. Step 2: Convert to fraction form
    115,130.64/158,885.79 = 64,146.81/x
  3. Step 3: Cross multiply
    115,130.64x = 158,885.79 × 64,146.81
  4. Step 4: Simplify right side
    115,130.64x = 10,192,016,582.83
  5. Step 5: Solve for x
    x = 10,192,016,582.83/115,130.64
  6. Step 6: Final answer
    x = 88,525.67

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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.