Home / 137,913.48-190,328.70-103,861.88

Finding the Fourth Proportional to 137,913.48, 190,328.70 and 103,861.88

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Solution

The fourth proportional to 137,913.48, 190,328.70 and 103,861.88 is: 143,335.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,913.48 : 190,328.70 = 103,861.88 : x
  2. Step 2: Convert to fraction form
    137,913.48/190,328.70 = 103,861.88/x
  3. Step 3: Cross multiply
    137,913.48x = 190,328.70 × 103,861.88
  4. Step 4: Simplify right side
    137,913.48x = 19,767,896,599.96
  5. Step 5: Solve for x
    x = 19,767,896,599.96/137,913.48
  6. Step 6: Final answer
    x = 143,335.49

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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.