Home / 136,972.76-205,478.64-42,210.72

Finding the Fourth Proportional to 136,972.76, 205,478.64 and 42,210.72

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Solution

The fourth proportional to 136,972.76, 205,478.64 and 42,210.72 is: 63,322.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,972.76 : 205,478.64 = 42,210.72 : x
  2. Step 2: Convert to fraction form
    136,972.76/205,478.64 = 42,210.72/x
  3. Step 3: Cross multiply
    136,972.76x = 205,478.64 × 42,210.72
  4. Step 4: Simplify right side
    136,972.76x = 8,673,401,339.02
  5. Step 5: Solve for x
    x = 8,673,401,339.02/136,972.76
  6. Step 6: Final answer
    x = 63,322.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.