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Finding the Fourth Proportional to 122,903.93, 169,595.70 and 90,656.10

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Solution

The fourth proportional to 122,903.93, 169,595.70 and 90,656.10 is: 125,096.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,903.93 : 169,595.70 = 90,656.10 : x
  2. Step 2: Convert to fraction form
    122,903.93/169,595.70 = 90,656.10/x
  3. Step 3: Cross multiply
    122,903.93x = 169,595.70 × 90,656.10
  4. Step 4: Simplify right side
    122,903.93x = 15,374,885,488.51
  5. Step 5: Solve for x
    x = 15,374,885,488.51/122,903.93
  6. Step 6: Final answer
    x = 125,096.77

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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.