Home / 145,140.31-217,718.57-45,314.29

Finding the Fourth Proportional to 145,140.31, 217,718.57 and 45,314.29

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Solution

The fourth proportional to 145,140.31, 217,718.57 and 45,314.29 is: 67,973.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,140.31 : 217,718.57 = 45,314.29 : x
  2. Step 2: Convert to fraction form
    145,140.31/217,718.57 = 45,314.29/x
  3. Step 3: Cross multiply
    145,140.31x = 217,718.57 × 45,314.29
  4. Step 4: Simplify right side
    145,140.31x = 9,865,762,419.37
  5. Step 5: Solve for x
    x = 9,865,762,419.37/145,140.31
  6. Step 6: Final answer
    x = 67,973.97

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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.