Home / 142,006.40-213,009.60-120,897.80

Finding the Fourth Proportional to 142,006.40, 213,009.60 and 120,897.80

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Solution

The fourth proportional to 142,006.40, 213,009.60 and 120,897.80 is: 181,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,006.40 : 213,009.60 = 120,897.80 : x
  2. Step 2: Convert to fraction form
    142,006.40/213,009.60 = 120,897.80/x
  3. Step 3: Cross multiply
    142,006.40x = 213,009.60 × 120,897.80
  4. Step 4: Simplify right side
    142,006.40x = 25,752,392,018.88
  5. Step 5: Solve for x
    x = 25,752,392,018.88/142,006.40
  6. Step 6: Final answer
    x = 181,346.70

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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.