Home / 153,821.76-212,267.16-85,835.04

Finding the Fourth Proportional to 153,821.76, 212,267.16 and 85,835.04

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Solution

The fourth proportional to 153,821.76, 212,267.16 and 85,835.04 is: 118,448.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,821.76 : 212,267.16 = 85,835.04 : x
  2. Step 2: Convert to fraction form
    153,821.76/212,267.16 = 85,835.04/x
  3. Step 3: Cross multiply
    153,821.76x = 212,267.16 × 85,835.04
  4. Step 4: Simplify right side
    153,821.76x = 18,219,960,169.29
  5. Step 5: Solve for x
    x = 18,219,960,169.29/153,821.76
  6. Step 6: Final answer
    x = 118,448.52

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1.5x scale

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.