Home / 142,729.27-196,966.40-79,071.19

Finding the Fourth Proportional to 142,729.27, 196,966.40 and 79,071.19

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Solution

The fourth proportional to 142,729.27, 196,966.40 and 79,071.19 is: 109,118.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,729.27 : 196,966.40 = 79,071.19 : x
  2. Step 2: Convert to fraction form
    142,729.27/196,966.40 = 79,071.19/x
  3. Step 3: Cross multiply
    142,729.27x = 196,966.40 × 79,071.19
  4. Step 4: Simplify right side
    142,729.27x = 15,574,367,638.02
  5. Step 5: Solve for x
    x = 15,574,367,638.02/142,729.27
  6. Step 6: Final answer
    x = 109,118.25

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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.