Home / 142,337.48-196,421.04-78,674.96

Finding the Fourth Proportional to 142,337.48, 196,421.04 and 78,674.96

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Solution

The fourth proportional to 142,337.48, 196,421.04 and 78,674.96 is: 108,568.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,337.48 : 196,421.04 = 78,674.96 : x
  2. Step 2: Convert to fraction form
    142,337.48/196,421.04 = 78,674.96/x
  3. Step 3: Cross multiply
    142,337.48x = 196,421.04 × 78,674.96
  4. Step 4: Simplify right side
    142,337.48x = 15,453,417,465.16
  5. Step 5: Solve for x
    x = 15,453,417,465.16/142,337.48
  6. Step 6: Final answer
    x = 108,568.86

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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.