Home / 112,855.40-155,688.10-79,341.16

Finding the Fourth Proportional to 112,855.40, 155,688.10 and 79,341.16

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Solution

The fourth proportional to 112,855.40, 155,688.10 and 79,341.16 is: 109,454.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,855.40 : 155,688.10 = 79,341.16 : x
  2. Step 2: Convert to fraction form
    112,855.40/155,688.10 = 79,341.16/x
  3. Step 3: Cross multiply
    112,855.40x = 155,688.10 × 79,341.16
  4. Step 4: Simplify right side
    112,855.40x = 12,352,474,452.20
  5. Step 5: Solve for x
    x = 12,352,474,452.20/112,855.40
  6. Step 6: Final answer
    x = 109,454.00

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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.