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Finding the Fourth Proportional to 122,654.67, 169,248.29 and 70,980.63

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Solution

The fourth proportional to 122,654.67, 169,248.29 and 70,980.63 is: 97,944.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,654.67 : 169,248.29 = 70,980.63 : x
  2. Step 2: Convert to fraction form
    122,654.67/169,248.29 = 70,980.63/x
  3. Step 3: Cross multiply
    122,654.67x = 169,248.29 × 70,980.63
  4. Step 4: Simplify right side
    122,654.67x = 12,013,349,895.72
  5. Step 5: Solve for x
    x = 12,013,349,895.72/122,654.67
  6. Step 6: Final answer
    x = 97,944.50

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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.