Home / 145,670.40-218,505.60-93,139.20

Finding the Fourth Proportional to 145,670.40, 218,505.60 and 93,139.20

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Solution

The fourth proportional to 145,670.40, 218,505.60 and 93,139.20 is: 139,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,670.40 : 218,505.60 = 93,139.20 : x
  2. Step 2: Convert to fraction form
    145,670.40/218,505.60 = 93,139.20/x
  3. Step 3: Cross multiply
    145,670.40x = 218,505.60 × 93,139.20
  4. Step 4: Simplify right side
    145,670.40x = 20,351,436,779.52
  5. Step 5: Solve for x
    x = 20,351,436,779.52/145,670.40
  6. Step 6: Final answer
    x = 139,708.80

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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.