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Finding the Fourth Proportional to 112,989.88, 155,967.96 and 97,010.20

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Solution

The fourth proportional to 112,989.88, 155,967.96 and 97,010.20 is: 133,910.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,989.88 : 155,967.96 = 97,010.20 : x
  2. Step 2: Convert to fraction form
    112,989.88/155,967.96 = 97,010.20/x
  3. Step 3: Cross multiply
    112,989.88x = 155,967.96 × 97,010.20
  4. Step 4: Simplify right side
    112,989.88x = 15,130,482,993.19
  5. Step 5: Solve for x
    x = 15,130,482,993.19/112,989.88
  6. Step 6: Final answer
    x = 133,910.07

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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.