Home / 130,389.86-179,938.60-73,812.18

Finding the Fourth Proportional to 130,389.86, 179,938.60 and 73,812.18

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Solution

The fourth proportional to 130,389.86, 179,938.60 and 73,812.18 is: 101,861.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,389.86 : 179,938.60 = 73,812.18 : x
  2. Step 2: Convert to fraction form
    130,389.86/179,938.60 = 73,812.18/x
  3. Step 3: Cross multiply
    130,389.86x = 179,938.60 × 73,812.18
  4. Step 4: Simplify right side
    130,389.86x = 13,281,660,332.15
  5. Step 5: Solve for x
    x = 13,281,660,332.15/130,389.86
  6. Step 6: Final answer
    x = 101,861.14

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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.