Home / 118,690.65-163,795.05-64,974.78

Finding the Fourth Proportional to 118,690.65, 163,795.05 and 64,974.78

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Solution

The fourth proportional to 118,690.65, 163,795.05 and 64,974.78 is: 89,666.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,690.65 : 163,795.05 = 64,974.78 : x
  2. Step 2: Convert to fraction form
    118,690.65/163,795.05 = 64,974.78/x
  3. Step 3: Cross multiply
    118,690.65x = 163,795.05 × 64,974.78
  4. Step 4: Simplify right side
    118,690.65x = 10,642,547,338.84
  5. Step 5: Solve for x
    x = 10,642,547,338.84/118,690.65
  6. Step 6: Final answer
    x = 89,666.27

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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.