Home / 90,830.40-136,268.64-59,726.40

Finding the Fourth Proportional to 90,830.40, 136,268.64 and 59,726.40

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Solution

The fourth proportional to 90,830.40, 136,268.64 and 59,726.40 is: 89,604.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,830.40 : 136,268.64 = 59,726.40 : x
  2. Step 2: Convert to fraction form
    90,830.40/136,268.64 = 59,726.40/x
  3. Step 3: Cross multiply
    90,830.40x = 136,268.64 × 59,726.40
  4. Step 4: Simplify right side
    90,830.40x = 8,138,835,300.10
  5. Step 5: Solve for x
    x = 8,138,835,300.10/90,830.40
  6. Step 6: Final answer
    x = 89,604.75

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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.