Home / 129,537.36-178,763.67-72,176.76

Finding the Fourth Proportional to 129,537.36, 178,763.67 and 72,176.76

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Solution

The fourth proportional to 129,537.36, 178,763.67 and 72,176.76 is: 99,605.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,537.36 : 178,763.67 = 72,176.76 : x
  2. Step 2: Convert to fraction form
    129,537.36/178,763.67 = 72,176.76/x
  3. Step 3: Cross multiply
    129,537.36x = 178,763.67 × 72,176.76
  4. Step 4: Simplify right side
    129,537.36x = 12,902,582,506.31
  5. Step 5: Solve for x
    x = 12,902,582,506.31/129,537.36
  6. Step 6: Final answer
    x = 99,605.11

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1.5x scale

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.