Home / 142,645.24-196,853.40-78,117.16

Finding the Fourth Proportional to 142,645.24, 196,853.40 and 78,117.16

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Solution

The fourth proportional to 142,645.24, 196,853.40 and 78,117.16 is: 107,803.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,645.24 : 196,853.40 = 78,117.16 : x
  2. Step 2: Convert to fraction form
    142,645.24/196,853.40 = 78,117.16/x
  3. Step 3: Cross multiply
    142,645.24x = 196,853.40 × 78,117.16
  4. Step 4: Simplify right side
    142,645.24x = 15,377,628,544.34
  5. Step 5: Solve for x
    x = 15,377,628,544.34/142,645.24
  6. Step 6: Final answer
    x = 107,803.31

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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.