Home / 130,242.36-179,725.76-72,871.72

Finding the Fourth Proportional to 130,242.36, 179,725.76 and 72,871.72

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Solution

The fourth proportional to 130,242.36, 179,725.76 and 72,871.72 is: 100,558.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,242.36 : 179,725.76 = 72,871.72 : x
  2. Step 2: Convert to fraction form
    130,242.36/179,725.76 = 72,871.72/x
  3. Step 3: Cross multiply
    130,242.36x = 179,725.76 × 72,871.72
  4. Step 4: Simplify right side
    130,242.36x = 13,096,925,259.51
  5. Step 5: Solve for x
    x = 13,096,925,259.51/130,242.36
  6. Step 6: Final answer
    x = 100,558.11

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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.