Home / 145,166.70-217,639.28-66,225.72

Finding the Fourth Proportional to 145,166.70, 217,639.28 and 66,225.72

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Solution

The fourth proportional to 145,166.70, 217,639.28 and 66,225.72 is: 99,288.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,166.70 : 217,639.28 = 66,225.72 : x
  2. Step 2: Convert to fraction form
    145,166.70/217,639.28 = 66,225.72/x
  3. Step 3: Cross multiply
    145,166.70x = 217,639.28 × 66,225.72
  4. Step 4: Simplify right side
    145,166.70x = 14,413,318,018.28
  5. Step 5: Solve for x
    x = 14,413,318,018.28/145,166.70
  6. Step 6: Final answer
    x = 99,288.05

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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.