Home / 142,823.12-197,088.76-79,160.36

Finding the Fourth Proportional to 142,823.12, 197,088.76 and 79,160.36

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Solution

The fourth proportional to 142,823.12, 197,088.76 and 79,160.36 is: 109,237.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,823.12 : 197,088.76 = 79,160.36 : x
  2. Step 2: Convert to fraction form
    142,823.12/197,088.76 = 79,160.36/x
  3. Step 3: Cross multiply
    142,823.12x = 197,088.76 × 79,160.36
  4. Step 4: Simplify right side
    142,823.12x = 15,601,617,193.55
  5. Step 5: Solve for x
    x = 15,601,617,193.55/142,823.12
  6. Step 6: Final answer
    x = 109,237.34

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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.