Home / 142,949.08-197,293.35-79,307.38

Finding the Fourth Proportional to 142,949.08, 197,293.35 and 79,307.38

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Solution

The fourth proportional to 142,949.08, 197,293.35 and 79,307.38 is: 109,457.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,949.08 : 197,293.35 = 79,307.38 : x
  2. Step 2: Convert to fraction form
    142,949.08/197,293.35 = 79,307.38/x
  3. Step 3: Cross multiply
    142,949.08x = 197,293.35 × 79,307.38
  4. Step 4: Simplify right side
    142,949.08x = 15,646,818,679.92
  5. Step 5: Solve for x
    x = 15,646,818,679.92/142,949.08
  6. Step 6: Final answer
    x = 109,457.29

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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.