Home / 142,901.36-197,203.08-79,248.56

Finding the Fourth Proportional to 142,901.36, 197,203.08 and 79,248.56

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Solution

The fourth proportional to 142,901.36, 197,203.08 and 79,248.56 is: 109,362.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,901.36 : 197,203.08 = 79,248.56 : x
  2. Step 2: Convert to fraction form
    142,901.36/197,203.08 = 79,248.56/x
  3. Step 3: Cross multiply
    142,901.36x = 197,203.08 × 79,248.56
  4. Step 4: Simplify right side
    142,901.36x = 15,628,060,117.56
  5. Step 5: Solve for x
    x = 15,628,060,117.56/142,901.36
  6. Step 6: Final answer
    x = 109,362.57

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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.