Home / 121,763.10-168,084.81-74,031.69

Finding the Fourth Proportional to 121,763.10, 168,084.81 and 74,031.69

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Solution

The fourth proportional to 121,763.10, 168,084.81 and 74,031.69 is: 102,195.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,763.10 : 168,084.81 = 74,031.69 : x
  2. Step 2: Convert to fraction form
    121,763.10/168,084.81 = 74,031.69/x
  3. Step 3: Cross multiply
    121,763.10x = 168,084.81 × 74,031.69
  4. Step 4: Simplify right side
    121,763.10x = 12,443,602,547.63
  5. Step 5: Solve for x
    x = 12,443,602,547.63/121,763.10
  6. Step 6: Final answer
    x = 102,195.19

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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.