Home / 130,381.76-179,938.32-73,811.36

Finding the Fourth Proportional to 130,381.76, 179,938.32 and 73,811.36

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Solution

The fourth proportional to 130,381.76, 179,938.32 and 73,811.36 is: 101,866.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,381.76 : 179,938.32 = 73,811.36 : x
  2. Step 2: Convert to fraction form
    130,381.76/179,938.32 = 73,811.36/x
  3. Step 3: Cross multiply
    130,381.76x = 179,938.32 × 73,811.36
  4. Step 4: Simplify right side
    130,381.76x = 13,281,492,115.32
  5. Step 5: Solve for x
    x = 13,281,492,115.32/130,381.76
  6. Step 6: Final answer
    x = 101,866.18

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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.