Home / 142,886.54-197,184.30-79,225.40

Finding the Fourth Proportional to 142,886.54, 197,184.30 and 79,225.40

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Solution

The fourth proportional to 142,886.54, 197,184.30 and 79,225.40 is: 109,331.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,886.54 : 197,184.30 = 79,225.40 : x
  2. Step 2: Convert to fraction form
    142,886.54/197,184.30 = 79,225.40/x
  3. Step 3: Cross multiply
    142,886.54x = 197,184.30 × 79,225.40
  4. Step 4: Simplify right side
    142,886.54x = 15,622,005,041.22
  5. Step 5: Solve for x
    x = 15,622,005,041.22/142,886.54
  6. Step 6: Final answer
    x = 109,331.54

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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.