Home / 112,689.28-155,506.38-61,701.08

Finding the Fourth Proportional to 112,689.28, 155,506.38 and 61,701.08

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Solution

The fourth proportional to 112,689.28, 155,506.38 and 61,701.08 is: 85,144.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,689.28 : 155,506.38 = 61,701.08 : x
  2. Step 2: Convert to fraction form
    112,689.28/155,506.38 = 61,701.08/x
  3. Step 3: Cross multiply
    112,689.28x = 155,506.38 × 61,701.08
  4. Step 4: Simplify right side
    112,689.28x = 9,594,911,592.89
  5. Step 5: Solve for x
    x = 9,594,911,592.89/112,689.28
  6. Step 6: Final answer
    x = 85,144.85

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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.