Home / 109,146.90-150,621.12-61,400.28

Finding the Fourth Proportional to 109,146.90, 150,621.12 and 61,400.28

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Solution

The fourth proportional to 109,146.90, 150,621.12 and 61,400.28 is: 84,731.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,146.90 : 150,621.12 = 61,400.28 : x
  2. Step 2: Convert to fraction form
    109,146.90/150,621.12 = 61,400.28/x
  3. Step 3: Cross multiply
    109,146.90x = 150,621.12 × 61,400.28
  4. Step 4: Simplify right side
    109,146.90x = 9,248,178,941.91
  5. Step 5: Solve for x
    x = 9,248,178,941.91/109,146.90
  6. Step 6: Final answer
    x = 84,731.49

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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.