Home / 105,409,148.31-145,443,952.80-66,228,223.86

Finding the Fourth Proportional to 105,409,148.31, 145,443,952.80 and 66,228,223.86

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Solution

The fourth proportional to 105,409,148.31, 145,443,952.80 and 66,228,223.86 is: 91,381,960.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,409,148.31 : 145,443,952.80 = 66,228,223.86 : x
  2. Step 2: Convert to fraction form
    105,409,148.31/145,443,952.80 = 66,228,223.86/x
  3. Step 3: Cross multiply
    105,409,148.31x = 145,443,952.80 × 66,228,223.86
  4. Step 4: Simplify right side
    105,409,148.31x = 9,632,494,665,121,674
  5. Step 5: Solve for x
    x = 9,632,494,665,121,674/105,409,148.31
  6. Step 6: Final answer
    x = 91,381,960.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.