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Finding the Fourth Proportional to 99,136.58, 136,809.54 and 53,814.98

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Solution

The fourth proportional to 99,136.58, 136,809.54 and 53,814.98 is: 74,265.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,136.58 : 136,809.54 = 53,814.98 : x
  2. Step 2: Convert to fraction form
    99,136.58/136,809.54 = 53,814.98/x
  3. Step 3: Cross multiply
    99,136.58x = 136,809.54 × 53,814.98
  4. Step 4: Simplify right side
    99,136.58x = 7,362,403,000.93
  5. Step 5: Solve for x
    x = 7,362,403,000.93/99,136.58
  6. Step 6: Final answer
    x = 74,265.25

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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.