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Finding the Fourth Proportional to 145,421.20, 218,131.80 and 62,477.20

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Solution

The fourth proportional to 145,421.20, 218,131.80 and 62,477.20 is: 93,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,421.20 : 218,131.80 = 62,477.20 : x
  2. Step 2: Convert to fraction form
    145,421.20/218,131.80 = 62,477.20/x
  3. Step 3: Cross multiply
    145,421.20x = 218,131.80 × 62,477.20
  4. Step 4: Simplify right side
    145,421.20x = 13,628,264,094.96
  5. Step 5: Solve for x
    x = 13,628,264,094.96/145,421.20
  6. Step 6: Final answer
    x = 93,715.80

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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.