Home / 120,819.48-166,718.70-70,547.64

Finding the Fourth Proportional to 120,819.48, 166,718.70 and 70,547.64

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Solution

The fourth proportional to 120,819.48, 166,718.70 and 70,547.64 is: 97,348.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,819.48 : 166,718.70 = 70,547.64 : x
  2. Step 2: Convert to fraction form
    120,819.48/166,718.70 = 70,547.64/x
  3. Step 3: Cross multiply
    120,819.48x = 166,718.70 × 70,547.64
  4. Step 4: Simplify right side
    120,819.48x = 11,761,610,828.87
  5. Step 5: Solve for x
    x = 11,761,610,828.87/120,819.48
  6. Step 6: Final answer
    x = 97,348.63

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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.