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Finding the Fourth Proportional to 145,026.40, 217,280.40 and 124,290.40

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Solution

The fourth proportional to 145,026.40, 217,280.40 and 124,290.40 is: 186,213.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,026.40 : 217,280.40 = 124,290.40 : x
  2. Step 2: Convert to fraction form
    145,026.40/217,280.40 = 124,290.40/x
  3. Step 3: Cross multiply
    145,026.40x = 217,280.40 × 124,290.40
  4. Step 4: Simplify right side
    145,026.40x = 27,005,867,828.16
  5. Step 5: Solve for x
    x = 27,005,867,828.16/145,026.40
  6. Step 6: Final answer
    x = 186,213.46

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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.