Home / 142,812.04-197,080.58-79,159.40

Finding the Fourth Proportional to 142,812.04, 197,080.58 and 79,159.40

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Solution

The fourth proportional to 142,812.04, 197,080.58 and 79,159.40 is: 109,239.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,812.04 : 197,080.58 = 79,159.40 : x
  2. Step 2: Convert to fraction form
    142,812.04/197,080.58 = 79,159.40/x
  3. Step 3: Cross multiply
    142,812.04x = 197,080.58 × 79,159.40
  4. Step 4: Simplify right side
    142,812.04x = 15,600,780,464.45
  5. Step 5: Solve for x
    x = 15,600,780,464.45/142,812.04
  6. Step 6: Final answer
    x = 109,239.95

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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.