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Finding the Fourth Proportional to 108,415.90, 149,615.72 and 59,356.71

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Solution

The fourth proportional to 108,415.90, 149,615.72 and 59,356.71 is: 81,913.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,415.90 : 149,615.72 = 59,356.71 : x
  2. Step 2: Convert to fraction form
    108,415.90/149,615.72 = 59,356.71/x
  3. Step 3: Cross multiply
    108,415.90x = 149,615.72 × 59,356.71
  4. Step 4: Simplify right side
    108,415.90x = 8,880,696,602.11
  5. Step 5: Solve for x
    x = 8,880,696,602.11/108,415.90
  6. Step 6: Final answer
    x = 81,913.23

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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.