Home / 103,351,215.40-155,026,823.10-66,761,502.55

Finding the Fourth Proportional to 103,351,215.40, 155,026,823.10 and 66,761,502.55

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Solution

The fourth proportional to 103,351,215.40, 155,026,823.10 and 66,761,502.55 is: 100,142,253.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,351,215.40 : 155,026,823.10 = 66,761,502.55 : x
  2. Step 2: Convert to fraction form
    103,351,215.40/155,026,823.10 = 66,761,502.55/x
  3. Step 3: Cross multiply
    103,351,215.40x = 155,026,823.10 × 66,761,502.55
  4. Step 4: Simplify right side
    103,351,215.40x = 10,349,823,645,709,048
  5. Step 5: Solve for x
    x = 10,349,823,645,709,048/103,351,215.40
  6. Step 6: Final answer
    x = 100,142,253.83

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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.