Home / 128,864.08-193,351.80-69,741.76

Finding the Fourth Proportional to 128,864.08, 193,351.80 and 69,741.76

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Solution

The fourth proportional to 128,864.08, 193,351.80 and 69,741.76 is: 104,642.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,864.08 : 193,351.80 = 69,741.76 : x
  2. Step 2: Convert to fraction form
    128,864.08/193,351.80 = 69,741.76/x
  3. Step 3: Cross multiply
    128,864.08x = 193,351.80 × 69,741.76
  4. Step 4: Simplify right side
    128,864.08x = 13,484,694,831.17
  5. Step 5: Solve for x
    x = 13,484,694,831.17/128,864.08
  6. Step 6: Final answer
    x = 104,642.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.