Home / 112,322.80-155,017.08-68,740.72

Finding the Fourth Proportional to 112,322.80, 155,017.08 and 68,740.72

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Solution

The fourth proportional to 112,322.80, 155,017.08 and 68,740.72 is: 94,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,322.80 : 155,017.08 = 68,740.72 : x
  2. Step 2: Convert to fraction form
    112,322.80/155,017.08 = 68,740.72/x
  3. Step 3: Cross multiply
    112,322.80x = 155,017.08 × 68,740.72
  4. Step 4: Simplify right side
    112,322.80x = 10,655,985,691.50
  5. Step 5: Solve for x
    x = 10,655,985,691.50/112,322.80
  6. Step 6: Final answer
    x = 94,869.30

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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.