Home / 103,609.10-142,975.05-61,152.14

Finding the Fourth Proportional to 103,609.10, 142,975.05 and 61,152.14

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Solution

The fourth proportional to 103,609.10, 142,975.05 and 61,152.14 is: 84,386.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,609.10 : 142,975.05 = 61,152.14 : x
  2. Step 2: Convert to fraction form
    103,609.10/142,975.05 = 61,152.14/x
  3. Step 3: Cross multiply
    103,609.10x = 142,975.05 × 61,152.14
  4. Step 4: Simplify right side
    103,609.10x = 8,743,230,274.11
  5. Step 5: Solve for x
    x = 8,743,230,274.11/103,609.10
  6. Step 6: Final answer
    x = 84,386.70

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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.