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Finding the Fourth Proportional to 111,122.60, 153,311.06 and 63,341.48

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Solution

The fourth proportional to 111,122.60, 153,311.06 and 63,341.48 is: 87,389.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,122.60 : 153,311.06 = 63,341.48 : x
  2. Step 2: Convert to fraction form
    111,122.60/153,311.06 = 63,341.48/x
  3. Step 3: Cross multiply
    111,122.60x = 153,311.06 × 63,341.48
  4. Step 4: Simplify right side
    111,122.60x = 9,710,949,440.77
  5. Step 5: Solve for x
    x = 9,710,949,440.77/111,122.60
  6. Step 6: Final answer
    x = 87,389.51

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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.