Home / 142,712.40-196,756.38-122,783.34

Finding the Fourth Proportional to 142,712.40, 196,756.38 and 122,783.34

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Solution

The fourth proportional to 142,712.40, 196,756.38 and 122,783.34 is: 169,280.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,712.40 : 196,756.38 = 122,783.34 : x
  2. Step 2: Convert to fraction form
    142,712.40/196,756.38 = 122,783.34/x
  3. Step 3: Cross multiply
    142,712.40x = 196,756.38 × 122,783.34
  4. Step 4: Simplify right side
    142,712.40x = 24,158,405,502.71
  5. Step 5: Solve for x
    x = 24,158,405,502.71/142,712.40
  6. Step 6: Final answer
    x = 169,280.35

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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.