Home / 126,617,881.20-189,926,821.80-74,885,708.40

Finding the Fourth Proportional to 126,617,881.20, 189,926,821.80 and 74,885,708.40

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Solution

The fourth proportional to 126,617,881.20, 189,926,821.80 and 74,885,708.40 is: 112,328,562.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,617,881.20 : 189,926,821.80 = 74,885,708.40 : x
  2. Step 2: Convert to fraction form
    126,617,881.20/189,926,821.80 = 74,885,708.40/x
  3. Step 3: Cross multiply
    126,617,881.20x = 189,926,821.80 × 74,885,708.40
  4. Step 4: Simplify right side
    126,617,881.20x = 14,222,804,594,653,566
  5. Step 5: Solve for x
    x = 14,222,804,594,653,566/126,617,881.20
  6. Step 6: Final answer
    x = 112,328,562.60

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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.