Home / 145,128.90-217,651.86-56,363.40

Finding the Fourth Proportional to 145,128.90, 217,651.86 and 56,363.40

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Solution

The fourth proportional to 145,128.90, 217,651.86 and 56,363.40 is: 84,528.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,128.90 : 217,651.86 = 56,363.40 : x
  2. Step 2: Convert to fraction form
    145,128.90/217,651.86 = 56,363.40/x
  3. Step 3: Cross multiply
    145,128.90x = 217,651.86 × 56,363.40
  4. Step 4: Simplify right side
    145,128.90x = 12,267,598,845.92
  5. Step 5: Solve for x
    x = 12,267,598,845.92/145,128.90
  6. Step 6: Final answer
    x = 84,528.99

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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.