Home / 128,687,496.40-193,059,238.20-42,411,221.20

Finding the Fourth Proportional to 128,687,496.40, 193,059,238.20 and 42,411,221.20

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Solution

The fourth proportional to 128,687,496.40, 193,059,238.20 and 42,411,221.20 is: 63,626,057.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,687,496.40 : 193,059,238.20 = 42,411,221.20 : x
  2. Step 2: Convert to fraction form
    128,687,496.40/193,059,238.20 = 42,411,221.20/x
  3. Step 3: Cross multiply
    128,687,496.40x = 193,059,238.20 × 42,411,221.20
  4. Step 4: Simplify right side
    128,687,496.40x = 8,187,878,056,003,690
  5. Step 5: Solve for x
    x = 8,187,878,056,003,690/128,687,496.40
  6. Step 6: Final answer
    x = 63,626,057.58

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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.