Home / 142,380.24-196,486.02-77,851.32

Finding the Fourth Proportional to 142,380.24, 196,486.02 and 77,851.32

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Solution

The fourth proportional to 142,380.24, 196,486.02 and 77,851.32 is: 107,435.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,380.24 : 196,486.02 = 77,851.32 : x
  2. Step 2: Convert to fraction form
    142,380.24/196,486.02 = 77,851.32/x
  3. Step 3: Cross multiply
    142,380.24x = 196,486.02 × 77,851.32
  4. Step 4: Simplify right side
    142,380.24x = 15,296,696,018.55
  5. Step 5: Solve for x
    x = 15,296,696,018.55/142,380.24
  6. Step 6: Final answer
    x = 107,435.53

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1.5x scale

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.