Home / 129,370.30-178,526.37-72,007.72

Finding the Fourth Proportional to 129,370.30, 178,526.37 and 72,007.72

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Solution

The fourth proportional to 129,370.30, 178,526.37 and 72,007.72 is: 99,368.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,370.30 : 178,526.37 = 72,007.72 : x
  2. Step 2: Convert to fraction form
    129,370.30/178,526.37 = 72,007.72/x
  3. Step 3: Cross multiply
    129,370.30x = 178,526.37 × 72,007.72
  4. Step 4: Simplify right side
    129,370.30x = 12,855,276,863.58
  5. Step 5: Solve for x
    x = 12,855,276,863.58/129,370.30
  6. Step 6: Final answer
    x = 99,368.07

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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.