Home / 136,904.29-205,376.16-42,142.57

Finding the Fourth Proportional to 136,904.29, 205,376.16 and 42,142.57

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Solution

The fourth proportional to 136,904.29, 205,376.16 and 42,142.57 is: 63,219.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,904.29 : 205,376.16 = 42,142.57 : x
  2. Step 2: Convert to fraction form
    136,904.29/205,376.16 = 42,142.57/x
  3. Step 3: Cross multiply
    136,904.29x = 205,376.16 × 42,142.57
  4. Step 4: Simplify right side
    136,904.29x = 8,655,079,199.13
  5. Step 5: Solve for x
    x = 8,655,079,199.13/136,904.29
  6. Step 6: Final answer
    x = 63,219.93

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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.