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Finding the Fourth Proportional to 103,392.86, 142,697.85 and 63,130.10

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Solution

The fourth proportional to 103,392.86, 142,697.85 and 63,130.10 is: 87,129.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,392.86 : 142,697.85 = 63,130.10 : x
  2. Step 2: Convert to fraction form
    103,392.86/142,697.85 = 63,130.10/x
  3. Step 3: Cross multiply
    103,392.86x = 142,697.85 × 63,130.10
  4. Step 4: Simplify right side
    103,392.86x = 9,008,529,540.29
  5. Step 5: Solve for x
    x = 9,008,529,540.29/103,392.86
  6. Step 6: Final answer
    x = 87,129.13

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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.