Home / 145,689.12-218,443.23-61,405.92

Finding the Fourth Proportional to 145,689.12, 218,443.23 and 61,405.92

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Solution

The fourth proportional to 145,689.12, 218,443.23 and 61,405.92 is: 92,070.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,689.12 : 218,443.23 = 61,405.92 : x
  2. Step 2: Convert to fraction form
    145,689.12/218,443.23 = 61,405.92/x
  3. Step 3: Cross multiply
    145,689.12x = 218,443.23 × 61,405.92
  4. Step 4: Simplify right side
    145,689.12x = 13,413,707,505.92
  5. Step 5: Solve for x
    x = 13,413,707,505.92/145,689.12
  6. Step 6: Final answer
    x = 92,070.76

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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.