Home / 153,834.10-212,301.70-85,864.30

Finding the Fourth Proportional to 153,834.10, 212,301.70 and 85,864.30

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Solution

The fourth proportional to 153,834.10, 212,301.70 and 85,864.30 is: 118,498.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,834.10 : 212,301.70 = 85,864.30 : x
  2. Step 2: Convert to fraction form
    153,834.10/212,301.70 = 85,864.30/x
  3. Step 3: Cross multiply
    153,834.10x = 212,301.70 × 85,864.30
  4. Step 4: Simplify right side
    153,834.10x = 18,229,136,113.90
  5. Step 5: Solve for x
    x = 18,229,136,113.90/153,834.10
  6. Step 6: Final answer
    x = 118,498.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.