Home / 112,688.78-155,505.69-61,700.58

Finding the Fourth Proportional to 112,688.78, 155,505.69 and 61,700.58

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Solution

The fourth proportional to 112,688.78, 155,505.69 and 61,700.58 is: 85,144.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,688.78 : 155,505.69 = 61,700.58 : x
  2. Step 2: Convert to fraction form
    112,688.78/155,505.69 = 61,700.58/x
  3. Step 3: Cross multiply
    112,688.78x = 155,505.69 × 61,700.58
  4. Step 4: Simplify right side
    112,688.78x = 9,594,791,266.30
  5. Step 5: Solve for x
    x = 9,594,791,266.30/112,688.78
  6. Step 6: Final answer
    x = 85,144.16

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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.