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Finding the Fourth Proportional to 145,073.68, 217,555.12 and 56,315.72

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Solution

The fourth proportional to 145,073.68, 217,555.12 and 56,315.72 is: 84,452.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,073.68 : 217,555.12 = 56,315.72 : x
  2. Step 2: Convert to fraction form
    145,073.68/217,555.12 = 56,315.72/x
  3. Step 3: Cross multiply
    145,073.68x = 217,555.12 × 56,315.72
  4. Step 4: Simplify right side
    145,073.68x = 12,251,773,222.49
  5. Step 5: Solve for x
    x = 12,251,773,222.49/145,073.68
  6. Step 6: Final answer
    x = 84,452.07

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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.