Home / 103,430,664.70-155,133,555.45-42,840,072.70

Finding the Fourth Proportional to 103,430,664.70, 155,133,555.45 and 42,840,072.70

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Solution

The fourth proportional to 103,430,664.70, 155,133,555.45 and 42,840,072.70 is: 64,254,955.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,430,664.70 : 155,133,555.45 = 42,840,072.70 : x
  2. Step 2: Convert to fraction form
    103,430,664.70/155,133,555.45 = 42,840,072.70/x
  3. Step 3: Cross multiply
    103,430,664.70x = 155,133,555.45 × 42,840,072.70
  4. Step 4: Simplify right side
    103,430,664.70x = 6,645,932,793,687,481
  5. Step 5: Solve for x
    x = 6,645,932,793,687,481/103,430,664.70
  6. Step 6: Final answer
    x = 64,254,955.85

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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.