Home / 103,416.41-142,730.09-63,153.51

Finding the Fourth Proportional to 103,416.41, 142,730.09 and 63,153.51

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Solution

The fourth proportional to 103,416.41, 142,730.09 and 63,153.51 is: 87,161.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,416.41 : 142,730.09 = 63,153.51 : x
  2. Step 2: Convert to fraction form
    103,416.41/142,730.09 = 63,153.51/x
  3. Step 3: Cross multiply
    103,416.41x = 142,730.09 × 63,153.51
  4. Step 4: Simplify right side
    103,416.41x = 9,013,905,850.35
  5. Step 5: Solve for x
    x = 9,013,905,850.35/103,416.41
  6. Step 6: Final answer
    x = 87,161.28

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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.