Home / 142,720.06-196,953.90-79,056.46

Finding the Fourth Proportional to 142,720.06, 196,953.90 and 79,056.46

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Solution

The fourth proportional to 142,720.06, 196,953.90 and 79,056.46 is: 109,098.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,720.06 : 196,953.90 = 79,056.46 : x
  2. Step 2: Convert to fraction form
    142,720.06/196,953.90 = 79,056.46/x
  3. Step 3: Cross multiply
    142,720.06x = 196,953.90 × 79,056.46
  4. Step 4: Simplify right side
    142,720.06x = 15,570,478,117.19
  5. Step 5: Solve for x
    x = 15,570,478,117.19/142,720.06
  6. Step 6: Final answer
    x = 109,098.04

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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.