Home / 105,430.11-145,489.28-63,012.03

Finding the Fourth Proportional to 105,430.11, 145,489.28 and 63,012.03

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Solution

The fourth proportional to 105,430.11, 145,489.28 and 63,012.03 is: 86,954.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,430.11 : 145,489.28 = 63,012.03 : x
  2. Step 2: Convert to fraction form
    105,430.11/145,489.28 = 63,012.03/x
  3. Step 3: Cross multiply
    105,430.11x = 145,489.28 × 63,012.03
  4. Step 4: Simplify right side
    105,430.11x = 9,167,574,560.98
  5. Step 5: Solve for x
    x = 9,167,574,560.98/105,430.11
  6. Step 6: Final answer
    x = 86,954.05

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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.