Home / 145,638.10-218,177.35-89,314.04

Finding the Fourth Proportional to 145,638.10, 218,177.35 and 89,314.04

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Solution

The fourth proportional to 145,638.10, 218,177.35 and 89,314.04 is: 133,799.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,638.10 : 218,177.35 = 89,314.04 : x
  2. Step 2: Convert to fraction form
    145,638.10/218,177.35 = 89,314.04/x
  3. Step 3: Cross multiply
    145,638.10x = 218,177.35 × 89,314.04
  4. Step 4: Simplify right side
    145,638.10x = 19,486,300,887.15
  5. Step 5: Solve for x
    x = 19,486,300,887.15/145,638.10
  6. Step 6: Final answer
    x = 133,799.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.