Home / 145,838.06-201,256.66-78,770.06

Finding the Fourth Proportional to 145,838.06, 201,256.66 and 78,770.06

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Solution

The fourth proportional to 145,838.06, 201,256.66 and 78,770.06 is: 108,702.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,838.06 : 201,256.66 = 78,770.06 : x
  2. Step 2: Convert to fraction form
    145,838.06/201,256.66 = 78,770.06/x
  3. Step 3: Cross multiply
    145,838.06x = 201,256.66 × 78,770.06
  4. Step 4: Simplify right side
    145,838.06x = 15,852,999,785.20
  5. Step 5: Solve for x
    x = 15,852,999,785.20/145,838.06
  6. Step 6: Final answer
    x = 108,702.76

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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.