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Finding the Fourth Proportional to 124,525,187.70, 186,867,497.70 and 72,709,690.20

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Solution

The fourth proportional to 124,525,187.70, 186,867,497.70 and 72,709,690.20 is: 109,111,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,525,187.70 : 186,867,497.70 = 72,709,690.20 : x
  2. Step 2: Convert to fraction form
    124,525,187.70/186,867,497.70 = 72,709,690.20/x
  3. Step 3: Cross multiply
    124,525,187.70x = 186,867,497.70 × 72,709,690.20
  4. Step 4: Simplify right side
    124,525,187.70x = 13,587,077,866,216,212
  5. Step 5: Solve for x
    x = 13,587,077,866,216,212/124,525,187.70
  6. Step 6: Final answer
    x = 109,111,081.20

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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.