Home / 142,266.81-196,325.85-78,607.29

Finding the Fourth Proportional to 142,266.81, 196,325.85 and 78,607.29

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Solution

The fourth proportional to 142,266.81, 196,325.85 and 78,607.29 is: 108,476.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,266.81 : 196,325.85 = 78,607.29 : x
  2. Step 2: Convert to fraction form
    142,266.81/196,325.85 = 78,607.29/x
  3. Step 3: Cross multiply
    142,266.81x = 196,325.85 × 78,607.29
  4. Step 4: Simplify right side
    142,266.81x = 15,432,643,025.45
  5. Step 5: Solve for x
    x = 15,432,643,025.45/142,266.81
  6. Step 6: Final answer
    x = 108,476.76

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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.