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Finding the Fourth Proportional to 108,070.29, 149,168.67 and 62,768.63

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Solution

The fourth proportional to 108,070.29, 149,168.67 and 62,768.63 is: 86,639.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,070.29 : 149,168.67 = 62,768.63 : x
  2. Step 2: Convert to fraction form
    108,070.29/149,168.67 = 62,768.63/x
  3. Step 3: Cross multiply
    108,070.29x = 149,168.67 × 62,768.63
  4. Step 4: Simplify right side
    108,070.29x = 9,363,112,897.90
  5. Step 5: Solve for x
    x = 9,363,112,897.90/108,070.29
  6. Step 6: Final answer
    x = 86,639.11

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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.