Home / 142,077.80-213,008.70-72,007.40

Finding the Fourth Proportional to 142,077.80, 213,008.70 and 72,007.40

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Solution

The fourth proportional to 142,077.80, 213,008.70 and 72,007.40 is: 107,956.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,077.80 : 213,008.70 = 72,007.40 : x
  2. Step 2: Convert to fraction form
    142,077.80/213,008.70 = 72,007.40/x
  3. Step 3: Cross multiply
    142,077.80x = 213,008.70 × 72,007.40
  4. Step 4: Simplify right side
    142,077.80x = 15,338,202,664.38
  5. Step 5: Solve for x
    x = 15,338,202,664.38/142,077.80
  6. Step 6: Final answer
    x = 107,956.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.