Home / 131,109,636.82-180,931,334.98-72,372,340.12

Finding the Fourth Proportional to 131,109,636.82, 180,931,334.98 and 72,372,340.12

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Solution

The fourth proportional to 131,109,636.82, 180,931,334.98 and 72,372,340.12 is: 99,873,849.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,109,636.82 : 180,931,334.98 = 72,372,340.12 : x
  2. Step 2: Convert to fraction form
    131,109,636.82/180,931,334.98 = 72,372,340.12/x
  3. Step 3: Cross multiply
    131,109,636.82x = 180,931,334.98 × 72,372,340.12
  4. Step 4: Simplify right side
    131,109,636.82x = 13,094,424,113,538,214
  5. Step 5: Solve for x
    x = 13,094,424,113,538,214/131,109,636.82
  6. Step 6: Final answer
    x = 99,873,849.33

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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.