Home / 103,178.03-142,325.16-64,876.86

Finding the Fourth Proportional to 103,178.03, 142,325.16 and 64,876.86

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Solution

The fourth proportional to 103,178.03, 142,325.16 and 64,876.86 is: 89,492.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,178.03 : 142,325.16 = 64,876.86 : x
  2. Step 2: Convert to fraction form
    103,178.03/142,325.16 = 64,876.86/x
  3. Step 3: Cross multiply
    103,178.03x = 142,325.16 × 64,876.86
  4. Step 4: Simplify right side
    103,178.03x = 9,233,609,479.80
  5. Step 5: Solve for x
    x = 9,233,609,479.80/103,178.03
  6. Step 6: Final answer
    x = 89,492.02

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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.