Home / 145,434.40-218,151.60-89,447.20

Finding the Fourth Proportional to 145,434.40, 218,151.60 and 89,447.20

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Solution

The fourth proportional to 145,434.40, 218,151.60 and 89,447.20 is: 134,170.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,434.40 : 218,151.60 = 89,447.20 : x
  2. Step 2: Convert to fraction form
    145,434.40/218,151.60 = 89,447.20/x
  3. Step 3: Cross multiply
    145,434.40x = 218,151.60 × 89,447.20
  4. Step 4: Simplify right side
    145,434.40x = 19,513,049,795.52
  5. Step 5: Solve for x
    x = 19,513,049,795.52/145,434.40
  6. Step 6: Final answer
    x = 134,170.80

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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.