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Finding the Fourth Proportional to 138,673,881.60, 208,010,822.40 and 104,409,715.20

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Solution

The fourth proportional to 138,673,881.60, 208,010,822.40 and 104,409,715.20 is: 156,614,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,673,881.60 : 208,010,822.40 = 104,409,715.20 : x
  2. Step 2: Convert to fraction form
    138,673,881.60/208,010,822.40 = 104,409,715.20/x
  3. Step 3: Cross multiply
    138,673,881.60x = 208,010,822.40 × 104,409,715.20
  4. Step 4: Simplify right side
    138,673,881.60x = 21,718,350,725,301,780
  5. Step 5: Solve for x
    x = 21,718,350,725,301,780/138,673,881.60
  6. Step 6: Final answer
    x = 156,614,572.80

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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.