Home / 112,821.40-169,232.10-99,699.40

Finding the Fourth Proportional to 112,821.40, 169,232.10 and 99,699.40

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Solution

The fourth proportional to 112,821.40, 169,232.10 and 99,699.40 is: 149,549.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,821.40 : 169,232.10 = 99,699.40 : x
  2. Step 2: Convert to fraction form
    112,821.40/169,232.10 = 99,699.40/x
  3. Step 3: Cross multiply
    112,821.40x = 169,232.10 × 99,699.40
  4. Step 4: Simplify right side
    112,821.40x = 16,872,338,830.74
  5. Step 5: Solve for x
    x = 16,872,338,830.74/112,821.40
  6. Step 6: Final answer
    x = 149,549.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.