Home / 130,895.29-196,638.18-78,341.68

Finding the Fourth Proportional to 130,895.29, 196,638.18 and 78,341.68

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Solution

The fourth proportional to 130,895.29, 196,638.18 and 78,341.68 is: 117,689.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,895.29 : 196,638.18 = 78,341.68 : x
  2. Step 2: Convert to fraction form
    130,895.29/196,638.18 = 78,341.68/x
  3. Step 3: Cross multiply
    130,895.29x = 196,638.18 × 78,341.68
  4. Step 4: Simplify right side
    130,895.29x = 15,404,965,373.34
  5. Step 5: Solve for x
    x = 15,404,965,373.34/130,895.29
  6. Step 6: Final answer
    x = 117,689.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.