Home / 142,968.40-197,320.05-79,326.70

Finding the Fourth Proportional to 142,968.40, 197,320.05 and 79,326.70

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Solution

The fourth proportional to 142,968.40, 197,320.05 and 79,326.70 is: 109,483.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,968.40 : 197,320.05 = 79,326.70 : x
  2. Step 2: Convert to fraction form
    142,968.40/197,320.05 = 79,326.70/x
  3. Step 3: Cross multiply
    142,968.40x = 197,320.05 × 79,326.70
  4. Step 4: Simplify right side
    142,968.40x = 15,652,748,410.34
  5. Step 5: Solve for x
    x = 15,652,748,410.34/142,968.40
  6. Step 6: Final answer
    x = 109,483.97

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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.