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Finding the Fourth Proportional to 107,029.90, 147,700.90 and 61,707.63

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Solution

The fourth proportional to 107,029.90, 147,700.90 and 61,707.63 is: 85,156.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,029.90 : 147,700.90 = 61,707.63 : x
  2. Step 2: Convert to fraction form
    107,029.90/147,700.90 = 61,707.63/x
  3. Step 3: Cross multiply
    107,029.90x = 147,700.90 × 61,707.63
  4. Step 4: Simplify right side
    107,029.90x = 9,114,272,487.87
  5. Step 5: Solve for x
    x = 9,114,272,487.87/107,029.90
  6. Step 6: Final answer
    x = 85,156.32

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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.