Home / 153,124.40-211,311.86-85,140.64

Finding the Fourth Proportional to 153,124.40, 211,311.86 and 85,140.64

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Solution

The fourth proportional to 153,124.40, 211,311.86 and 85,140.64 is: 117,494.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,124.40 : 211,311.86 = 85,140.64 : x
  2. Step 2: Convert to fraction form
    153,124.40/211,311.86 = 85,140.64/x
  3. Step 3: Cross multiply
    153,124.40x = 211,311.86 × 85,140.64
  4. Step 4: Simplify right side
    153,124.40x = 17,991,226,999.99
  5. Step 5: Solve for x
    x = 17,991,226,999.99/153,124.40
  6. Step 6: Final answer
    x = 117,494.19

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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.