Home / 133,116.09-183,704.50-72,689.89

Finding the Fourth Proportional to 133,116.09, 183,704.50 and 72,689.89

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Solution

The fourth proportional to 133,116.09, 183,704.50 and 72,689.89 is: 100,314.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,116.09 : 183,704.50 = 72,689.89 : x
  2. Step 2: Convert to fraction form
    133,116.09/183,704.50 = 72,689.89/x
  3. Step 3: Cross multiply
    133,116.09x = 183,704.50 × 72,689.89
  4. Step 4: Simplify right side
    133,116.09x = 13,353,459,897.51
  5. Step 5: Solve for x
    x = 13,353,459,897.51/133,116.09
  6. Step 6: Final answer
    x = 100,314.39

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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.