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Finding the Fourth Proportional to 105,160.48, 145,115.28 and 60,448.48

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Solution

The fourth proportional to 105,160.48, 145,115.28 and 60,448.48 is: 83,415.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,160.48 : 145,115.28 = 60,448.48 : x
  2. Step 2: Convert to fraction form
    105,160.48/145,115.28 = 60,448.48/x
  3. Step 3: Cross multiply
    105,160.48x = 145,115.28 × 60,448.48
  4. Step 4: Simplify right side
    105,160.48x = 8,771,998,100.77
  5. Step 5: Solve for x
    x = 8,771,998,100.77/105,160.48
  6. Step 6: Final answer
    x = 83,415.35

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1.5x scale

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.