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Finding the Fourth Proportional to 145,374.40, 218,061.60 and 124,638.40

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Solution

The fourth proportional to 145,374.40, 218,061.60 and 124,638.40 is: 186,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,374.40 : 218,061.60 = 124,638.40 : x
  2. Step 2: Convert to fraction form
    145,374.40/218,061.60 = 124,638.40/x
  3. Step 3: Cross multiply
    145,374.40x = 218,061.60 × 124,638.40
  4. Step 4: Simplify right side
    145,374.40x = 27,178,848,925.44
  5. Step 5: Solve for x
    x = 27,178,848,925.44/145,374.40
  6. Step 6: Final answer
    x = 186,957.60

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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.