Home / 145,835.68-218,507.20-89,558.40

Finding the Fourth Proportional to 145,835.68, 218,507.20 and 89,558.40

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Solution

The fourth proportional to 145,835.68, 218,507.20 and 89,558.40 is: 134,186.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,835.68 : 218,507.20 = 89,558.40 : x
  2. Step 2: Convert to fraction form
    145,835.68/218,507.20 = 89,558.40/x
  3. Step 3: Cross multiply
    145,835.68x = 218,507.20 × 89,558.40
  4. Step 4: Simplify right side
    145,835.68x = 19,569,155,220.48
  5. Step 5: Solve for x
    x = 19,569,155,220.48/145,835.68
  6. Step 6: Final answer
    x = 134,186.33

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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.