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Finding the Fourth Proportional to 160,574.85, 240,792.57 and 85,678.29

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Solution

The fourth proportional to 160,574.85, 240,792.57 and 85,678.29 is: 128,480.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,574.85 : 240,792.57 = 85,678.29 : x
  2. Step 2: Convert to fraction form
    160,574.85/240,792.57 = 85,678.29/x
  3. Step 3: Cross multiply
    160,574.85x = 240,792.57 × 85,678.29
  4. Step 4: Simplify right side
    160,574.85x = 20,630,695,642.31
  5. Step 5: Solve for x
    x = 20,630,695,642.31/160,574.85
  6. Step 6: Final answer
    x = 128,480.24

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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.