Home / 142,019,977.20-213,029,965.80-103,756,225.20

Finding the Fourth Proportional to 142,019,977.20, 213,029,965.80 and 103,756,225.20

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Solution

The fourth proportional to 142,019,977.20, 213,029,965.80 and 103,756,225.20 is: 155,634,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,019,977.20 : 213,029,965.80 = 103,756,225.20 : x
  2. Step 2: Convert to fraction form
    142,019,977.20/213,029,965.80 = 103,756,225.20/x
  3. Step 3: Cross multiply
    142,019,977.20x = 213,029,965.80 × 103,756,225.20
  4. Step 4: Simplify right side
    142,019,977.20x = 22,103,185,105,893,100
  5. Step 5: Solve for x
    x = 22,103,185,105,893,100/142,019,977.20
  6. Step 6: Final answer
    x = 155,634,337.80

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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.