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Finding the Fourth Proportional to 112,041.20, 168,061.80 and 70,569.20

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Solution

The fourth proportional to 112,041.20, 168,061.80 and 70,569.20 is: 105,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,041.20 : 168,061.80 = 70,569.20 : x
  2. Step 2: Convert to fraction form
    112,041.20/168,061.80 = 70,569.20/x
  3. Step 3: Cross multiply
    112,041.20x = 168,061.80 × 70,569.20
  4. Step 4: Simplify right side
    112,041.20x = 11,859,986,776.56
  5. Step 5: Solve for x
    x = 11,859,986,776.56/112,041.20
  6. Step 6: Final answer
    x = 105,853.80

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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.