Home / 121,246,973.20-181,870,459.80-72,874,032.40

Finding the Fourth Proportional to 121,246,973.20, 181,870,459.80 and 72,874,032.40

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Solution

The fourth proportional to 121,246,973.20, 181,870,459.80 and 72,874,032.40 is: 109,311,048.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,246,973.20 : 181,870,459.80 = 72,874,032.40 : x
  2. Step 2: Convert to fraction form
    121,246,973.20/181,870,459.80 = 72,874,032.40/x
  3. Step 3: Cross multiply
    121,246,973.20x = 181,870,459.80 × 72,874,032.40
  4. Step 4: Simplify right side
    121,246,973.20x = 13,253,633,780,068,100
  5. Step 5: Solve for x
    x = 13,253,633,780,068,100/121,246,973.20
  6. Step 6: Final answer
    x = 109,311,048.60

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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.