Home / 122,478.15-169,038.27-74,759.22

Finding the Fourth Proportional to 122,478.15, 169,038.27 and 74,759.22

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Solution

The fourth proportional to 122,478.15, 169,038.27 and 74,759.22 is: 103,178.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,478.15 : 169,038.27 = 74,759.22 : x
  2. Step 2: Convert to fraction form
    122,478.15/169,038.27 = 74,759.22/x
  3. Step 3: Cross multiply
    122,478.15x = 169,038.27 × 74,759.22
  4. Step 4: Simplify right side
    122,478.15x = 12,637,169,215.35
  5. Step 5: Solve for x
    x = 12,637,169,215.35/122,478.15
  6. Step 6: Final answer
    x = 103,178.97

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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.