Home / 131,140,891.20-180,973,584-72,407,216.64

Finding the Fourth Proportional to 131,140,891.20, 180,973,584 and 72,407,216.64

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Solution

The fourth proportional to 131,140,891.20, 180,973,584 and 72,407,216.64 is: 99,921,491.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,140,891.20 : 180,973,584 = 72,407,216.64 : x
  2. Step 2: Convert to fraction form
    131,140,891.20/180,973,584 = 72,407,216.64/x
  3. Step 3: Cross multiply
    131,140,891.20x = 180,973,584 × 72,407,216.64
  4. Step 4: Simplify right side
    131,140,891.20x = 13,103,793,502,805,238
  5. Step 5: Solve for x
    x = 13,103,793,502,805,238/131,140,891.20
  6. Step 6: Final answer
    x = 99,921,491.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.