Home / 108,128.36-149,208.54-60,378.86

Finding the Fourth Proportional to 108,128.36, 149,208.54 and 60,378.86

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Solution

The fourth proportional to 108,128.36, 149,208.54 and 60,378.86 is: 83,318.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,128.36 : 149,208.54 = 60,378.86 : x
  2. Step 2: Convert to fraction form
    108,128.36/149,208.54 = 60,378.86/x
  3. Step 3: Cross multiply
    108,128.36x = 149,208.54 × 60,378.86
  4. Step 4: Simplify right side
    108,128.36x = 9,009,041,547.46
  5. Step 5: Solve for x
    x = 9,009,041,547.46/108,128.36
  6. Step 6: Final answer
    x = 83,318.03

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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.