Home / 105,531.03-145,619.28-60,206.40

Finding the Fourth Proportional to 105,531.03, 145,619.28 and 60,206.40

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Solution

The fourth proportional to 105,531.03, 145,619.28 and 60,206.40 is: 83,077.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,531.03 : 145,619.28 = 60,206.40 : x
  2. Step 2: Convert to fraction form
    105,531.03/145,619.28 = 60,206.40/x
  3. Step 3: Cross multiply
    105,531.03x = 145,619.28 × 60,206.40
  4. Step 4: Simplify right side
    105,531.03x = 8,767,212,619.39
  5. Step 5: Solve for x
    x = 8,767,212,619.39/105,531.03
  6. Step 6: Final answer
    x = 83,077.11

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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.