Home / 134,038.56-184,988-76,683.20

Finding the Fourth Proportional to 134,038.56, 184,988 and 76,683.20

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Solution

The fourth proportional to 134,038.56, 184,988 and 76,683.20 is: 105,831.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,038.56 : 184,988 = 76,683.20 : x
  2. Step 2: Convert to fraction form
    134,038.56/184,988 = 76,683.20/x
  3. Step 3: Cross multiply
    134,038.56x = 184,988 × 76,683.20
  4. Step 4: Simplify right side
    134,038.56x = 14,185,471,801.60
  5. Step 5: Solve for x
    x = 14,185,471,801.60/134,038.56
  6. Step 6: Final answer
    x = 105,831.28

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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.