Home / 142,423.56-196,527.36-78,752.64

Finding the Fourth Proportional to 142,423.56, 196,527.36 and 78,752.64

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Solution

The fourth proportional to 142,423.56, 196,527.36 and 78,752.64 is: 108,669.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,423.56 : 196,527.36 = 78,752.64 : x
  2. Step 2: Convert to fraction form
    142,423.56/196,527.36 = 78,752.64/x
  3. Step 3: Cross multiply
    142,423.56x = 196,527.36 × 78,752.64
  4. Step 4: Simplify right side
    142,423.56x = 15,477,048,432.23
  5. Step 5: Solve for x
    x = 15,477,048,432.23/142,423.56
  6. Step 6: Final answer
    x = 108,669.16

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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.