Home / 142,019,971.20-213,029,956.80-103,756,219.20

Finding the Fourth Proportional to 142,019,971.20, 213,029,956.80 and 103,756,219.20

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Solution

The fourth proportional to 142,019,971.20, 213,029,956.80 and 103,756,219.20 is: 155,634,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,019,971.20 : 213,029,956.80 = 103,756,219.20 : x
  2. Step 2: Convert to fraction form
    142,019,971.20/213,029,956.80 = 103,756,219.20/x
  3. Step 3: Cross multiply
    142,019,971.20x = 213,029,956.80 × 103,756,219.20
  4. Step 4: Simplify right side
    142,019,971.20x = 22,103,182,893,907,332
  5. Step 5: Solve for x
    x = 22,103,182,893,907,332/142,019,971.20
  6. Step 6: Final answer
    x = 155,634,328.80

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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.