Home / 113,979.65-170,875.58-85,845.69

Finding the Fourth Proportional to 113,979.65, 170,875.58 and 85,845.69

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Solution

The fourth proportional to 113,979.65, 170,875.58 and 85,845.69 is: 128,697.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,979.65 : 170,875.58 = 85,845.69 : x
  2. Step 2: Convert to fraction form
    113,979.65/170,875.58 = 85,845.69/x
  3. Step 3: Cross multiply
    113,979.65x = 170,875.58 × 85,845.69
  4. Step 4: Simplify right side
    113,979.65x = 14,668,931,640.02
  5. Step 5: Solve for x
    x = 14,668,931,640.02/113,979.65
  6. Step 6: Final answer
    x = 128,697.82

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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.