Home / 142,139.01-196,152.13-78,476.93

Finding the Fourth Proportional to 142,139.01, 196,152.13 and 78,476.93

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Solution

The fourth proportional to 142,139.01, 196,152.13 and 78,476.93 is: 108,298.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,139.01 : 196,152.13 = 78,476.93 : x
  2. Step 2: Convert to fraction form
    142,139.01/196,152.13 = 78,476.93/x
  3. Step 3: Cross multiply
    142,139.01x = 196,152.13 × 78,476.93
  4. Step 4: Simplify right side
    142,139.01x = 15,393,416,975.36
  5. Step 5: Solve for x
    x = 15,393,416,975.36/142,139.01
  6. Step 6: Final answer
    x = 108,298.33

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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.