Home / 142,369.16-196,473.54-78,711.05

Finding the Fourth Proportional to 142,369.16, 196,473.54 and 78,711.05

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Solution

The fourth proportional to 142,369.16, 196,473.54 and 78,711.05 is: 108,623.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,369.16 : 196,473.54 = 78,711.05 : x
  2. Step 2: Convert to fraction form
    142,369.16/196,473.54 = 78,711.05/x
  3. Step 3: Cross multiply
    142,369.16x = 196,473.54 × 78,711.05
  4. Step 4: Simplify right side
    142,369.16x = 15,464,638,630.62
  5. Step 5: Solve for x
    x = 15,464,638,630.62/142,369.16
  6. Step 6: Final answer
    x = 108,623.52

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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.