Home / 142,520,652.80-213,780,979.20-122,113,318.40

Finding the Fourth Proportional to 142,520,652.80, 213,780,979.20 and 122,113,318.40

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Solution

The fourth proportional to 142,520,652.80, 213,780,979.20 and 122,113,318.40 is: 183,169,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,520,652.80 : 213,780,979.20 = 122,113,318.40 : x
  2. Step 2: Convert to fraction form
    142,520,652.80/213,780,979.20 = 122,113,318.40/x
  3. Step 3: Cross multiply
    142,520,652.80x = 213,780,979.20 × 122,113,318.40
  4. Step 4: Simplify right side
    142,520,652.80x = 26,105,504,780,913,376
  5. Step 5: Solve for x
    x = 26,105,504,780,913,376/142,520,652.80
  6. Step 6: Final answer
    x = 183,169,977.60

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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.