Home / 145,320.40-217,834.80-66,491.20

Finding the Fourth Proportional to 145,320.40, 217,834.80 and 66,491.20

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Solution

The fourth proportional to 145,320.40, 217,834.80 and 66,491.20 is: 99,670.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,320.40 : 217,834.80 = 66,491.20 : x
  2. Step 2: Convert to fraction form
    145,320.40/217,834.80 = 66,491.20/x
  3. Step 3: Cross multiply
    145,320.40x = 217,834.80 × 66,491.20
  4. Step 4: Simplify right side
    145,320.40x = 14,484,097,253.76
  5. Step 5: Solve for x
    x = 14,484,097,253.76/145,320.40
  6. Step 6: Final answer
    x = 99,670.09

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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.