Home / 142,521.21-196,676.19-77,990.16

Finding the Fourth Proportional to 142,521.21, 196,676.19 and 77,990.16

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Solution

The fourth proportional to 142,521.21, 196,676.19 and 77,990.16 is: 107,624.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,521.21 : 196,676.19 = 77,990.16 : x
  2. Step 2: Convert to fraction form
    142,521.21/196,676.19 = 77,990.16/x
  3. Step 3: Cross multiply
    142,521.21x = 196,676.19 × 77,990.16
  4. Step 4: Simplify right side
    142,521.21x = 15,338,807,526.29
  5. Step 5: Solve for x
    x = 15,338,807,526.29/142,521.21
  6. Step 6: Final answer
    x = 107,624.74

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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.