Home / 142,130.75-196,135.29-77,598.80

Finding the Fourth Proportional to 142,130.75, 196,135.29 and 77,598.80

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Solution

The fourth proportional to 142,130.75, 196,135.29 and 77,598.80 is: 107,083.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,130.75 : 196,135.29 = 77,598.80 : x
  2. Step 2: Convert to fraction form
    142,130.75/196,135.29 = 77,598.80/x
  3. Step 3: Cross multiply
    142,130.75x = 196,135.29 × 77,598.80
  4. Step 4: Simplify right side
    142,130.75x = 15,219,863,141.65
  5. Step 5: Solve for x
    x = 15,219,863,141.65/142,130.75
  6. Step 6: Final answer
    x = 107,083.53

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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.