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Finding the Fourth Proportional to 145,394.70, 218,102.85 and 51,888.30

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Solution

The fourth proportional to 145,394.70, 218,102.85 and 51,888.30 is: 77,836.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,394.70 : 218,102.85 = 51,888.30 : x
  2. Step 2: Convert to fraction form
    145,394.70/218,102.85 = 51,888.30/x
  3. Step 3: Cross multiply
    145,394.70x = 218,102.85 × 51,888.30
  4. Step 4: Simplify right side
    145,394.70x = 11,316,986,111.66
  5. Step 5: Solve for x
    x = 11,316,986,111.66/145,394.70
  6. Step 6: Final answer
    x = 77,836.30

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1.5x scale

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.