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Finding the Fourth Proportional to 129,712.68, 179,003.16 and 70,096.68

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Solution

The fourth proportional to 129,712.68, 179,003.16 and 70,096.68 is: 96,733.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,712.68 : 179,003.16 = 70,096.68 : x
  2. Step 2: Convert to fraction form
    129,712.68/179,003.16 = 70,096.68/x
  3. Step 3: Cross multiply
    129,712.68x = 179,003.16 × 70,096.68
  4. Step 4: Simplify right side
    129,712.68x = 12,547,527,225.51
  5. Step 5: Solve for x
    x = 12,547,527,225.51/129,712.68
  6. Step 6: Final answer
    x = 96,733.24

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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.