Home / 142,107.79-196,127.45-99,059.43

Finding the Fourth Proportional to 142,107.79, 196,127.45 and 99,059.43

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Solution

The fourth proportional to 142,107.79, 196,127.45 and 99,059.43 is: 136,715.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,107.79 : 196,127.45 = 99,059.43 : x
  2. Step 2: Convert to fraction form
    142,107.79/196,127.45 = 99,059.43/x
  3. Step 3: Cross multiply
    142,107.79x = 196,127.45 × 99,059.43
  4. Step 4: Simplify right side
    142,107.79x = 19,428,273,404.35
  5. Step 5: Solve for x
    x = 19,428,273,404.35/142,107.79
  6. Step 6: Final answer
    x = 136,715.05

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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.