Home / 99,142.93-136,817.27-53,820.87

Finding the Fourth Proportional to 99,142.93, 136,817.27 and 53,820.87

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Solution

The fourth proportional to 99,142.93, 136,817.27 and 53,820.87 is: 74,272.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,142.93 : 136,817.27 = 53,820.87 : x
  2. Step 2: Convert to fraction form
    99,142.93/136,817.27 = 53,820.87/x
  3. Step 3: Cross multiply
    99,142.93x = 136,817.27 × 53,820.87
  4. Step 4: Simplify right side
    99,142.93x = 7,363,624,502.42
  5. Step 5: Solve for x
    x = 7,363,624,502.42/99,142.93
  6. Step 6: Final answer
    x = 74,272.82

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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.