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Finding the Fourth Proportional to 139,961,649.60, 209,772,264.96 and 99,032,883.84

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Solution

The fourth proportional to 139,961,649.60, 209,772,264.96 and 99,032,883.84 is: 148,428,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,961,649.60 : 209,772,264.96 = 99,032,883.84 : x
  2. Step 2: Convert to fraction form
    139,961,649.60/209,772,264.96 = 99,032,883.84/x
  3. Step 3: Cross multiply
    139,961,649.60x = 209,772,264.96 × 99,032,883.84
  4. Step 4: Simplify right side
    139,961,649.60x = 20,774,352,348,637,384
  5. Step 5: Solve for x
    x = 20,774,352,348,637,384/139,961,649.60
  6. Step 6: Final answer
    x = 148,428,890.40

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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.