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Finding the Fourth Proportional to 103,448.54, 154,543.95 and 65,706.39

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Solution

The fourth proportional to 103,448.54, 154,543.95 and 65,706.39 is: 98,160.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,448.54 : 154,543.95 = 65,706.39 : x
  2. Step 2: Convert to fraction form
    103,448.54/154,543.95 = 65,706.39/x
  3. Step 3: Cross multiply
    103,448.54x = 154,543.95 × 65,706.39
  4. Step 4: Simplify right side
    103,448.54x = 10,154,525,050.84
  5. Step 5: Solve for x
    x = 10,154,525,050.84/103,448.54
  6. Step 6: Final answer
    x = 98,160.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.