Home / 142,181.02-196,209.89-77,651.16

Finding the Fourth Proportional to 142,181.02, 196,209.89 and 77,651.16

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Solution

The fourth proportional to 142,181.02, 196,209.89 and 77,651.16 is: 107,158.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,181.02 : 196,209.89 = 77,651.16 : x
  2. Step 2: Convert to fraction form
    142,181.02/196,209.89 = 77,651.16/x
  3. Step 3: Cross multiply
    142,181.02x = 196,209.89 × 77,651.16
  4. Step 4: Simplify right side
    142,181.02x = 15,235,925,165.91
  5. Step 5: Solve for x
    x = 15,235,925,165.91/142,181.02
  6. Step 6: Final answer
    x = 107,158.64

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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.