Home / 91,109.18-136,709.93-61,464.76

Finding the Fourth Proportional to 91,109.18, 136,709.93 and 61,464.76

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Solution

The fourth proportional to 91,109.18, 136,709.93 and 61,464.76 is: 92,228.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,109.18 : 136,709.93 = 61,464.76 : x
  2. Step 2: Convert to fraction form
    91,109.18/136,709.93 = 61,464.76/x
  3. Step 3: Cross multiply
    91,109.18x = 136,709.93 × 61,464.76
  4. Step 4: Simplify right side
    91,109.18x = 8,402,842,387.97
  5. Step 5: Solve for x
    x = 8,402,842,387.97/91,109.18
  6. Step 6: Final answer
    x = 92,228.27

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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.