Home / 128,926,472.80-193,389,709.20-103,417,304.80

Finding the Fourth Proportional to 128,926,472.80, 193,389,709.20 and 103,417,304.80

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Solution

The fourth proportional to 128,926,472.80, 193,389,709.20 and 103,417,304.80 is: 155,125,957.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,926,472.80 : 193,389,709.20 = 103,417,304.80 : x
  2. Step 2: Convert to fraction form
    128,926,472.80/193,389,709.20 = 103,417,304.80/x
  3. Step 3: Cross multiply
    128,926,472.80x = 193,389,709.20 × 103,417,304.80
  4. Step 4: Simplify right side
    128,926,472.80x = 19,999,842,501,519,764
  5. Step 5: Solve for x
    x = 19,999,842,501,519,764/128,926,472.80
  6. Step 6: Final answer
    x = 155,125,957.20

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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.