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Finding the Fourth Proportional to 112,686.40, 169,029.60 and 102,318.40

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Solution

The fourth proportional to 112,686.40, 169,029.60 and 102,318.40 is: 153,477.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,686.40 : 169,029.60 = 102,318.40 : x
  2. Step 2: Convert to fraction form
    112,686.40/169,029.60 = 102,318.40/x
  3. Step 3: Cross multiply
    112,686.40x = 169,029.60 × 102,318.40
  4. Step 4: Simplify right side
    112,686.40x = 17,294,838,224.64
  5. Step 5: Solve for x
    x = 17,294,838,224.64/112,686.40
  6. Step 6: Final answer
    x = 153,477.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.