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Finding the Fourth Proportional to 106,787, 147,376.92 and 61,466.88

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Solution

The fourth proportional to 106,787, 147,376.92 and 61,466.88 is: 84,830.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,787 : 147,376.92 = 61,466.88 : x
  2. Step 2: Convert to fraction form
    106,787/147,376.92 = 61,466.88/x
  3. Step 3: Cross multiply
    106,787x = 147,376.92 × 61,466.88
  4. Step 4: Simplify right side
    106,787x = 9,058,799,456.41
  5. Step 5: Solve for x
    x = 9,058,799,456.41/106,787
  6. Step 6: Final answer
    x = 84,830.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.