Home / 122,740.16-169,444.64-72,455.36

Finding the Fourth Proportional to 122,740.16, 169,444.64 and 72,455.36

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Solution

The fourth proportional to 122,740.16, 169,444.64 and 72,455.36 is: 100,025.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,740.16 : 169,444.64 = 72,455.36 : x
  2. Step 2: Convert to fraction form
    122,740.16/169,444.64 = 72,455.36/x
  3. Step 3: Cross multiply
    122,740.16x = 169,444.64 × 72,455.36
  4. Step 4: Simplify right side
    122,740.16x = 12,277,172,391.27
  5. Step 5: Solve for x
    x = 12,277,172,391.27/122,740.16
  6. Step 6: Final answer
    x = 100,025.72

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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.