Home / 133,182.70-183,784.75-72,741.31

Finding the Fourth Proportional to 133,182.70, 183,784.75 and 72,741.31

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Solution

The fourth proportional to 133,182.70, 183,784.75 and 72,741.31 is: 100,378.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,182.70 : 183,784.75 = 72,741.31 : x
  2. Step 2: Convert to fraction form
    133,182.70/183,784.75 = 72,741.31/x
  3. Step 3: Cross multiply
    133,182.70x = 183,784.75 × 72,741.31
  4. Step 4: Simplify right side
    133,182.70x = 13,368,742,831.71
  5. Step 5: Solve for x
    x = 13,368,742,831.71/133,182.70
  6. Step 6: Final answer
    x = 100,378.98

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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.