Home / 128,721,903.20-193,064,192.40-37,836,015.20

Finding the Fourth Proportional to 128,721,903.20, 193,064,192.40 and 37,836,015.20

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Solution

The fourth proportional to 128,721,903.20, 193,064,192.40 and 37,836,015.20 is: 56,748,537.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,721,903.20 : 193,064,192.40 = 37,836,015.20 : x
  2. Step 2: Convert to fraction form
    128,721,903.20/193,064,192.40 = 37,836,015.20/x
  3. Step 3: Cross multiply
    128,721,903.20x = 193,064,192.40 × 37,836,015.20
  4. Step 4: Simplify right side
    128,721,903.20x = 7,304,779,718,222,125
  5. Step 5: Solve for x
    x = 7,304,779,718,222,125/128,721,903.20
  6. Step 6: Final answer
    x = 56,748,537.25

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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.