Home / 153,580.12-211,957.80-85,603.32

Finding the Fourth Proportional to 153,580.12, 211,957.80 and 85,603.32

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Solution

The fourth proportional to 153,580.12, 211,957.80 and 85,603.32 is: 118,142.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,580.12 : 211,957.80 = 85,603.32 : x
  2. Step 2: Convert to fraction form
    153,580.12/211,957.80 = 85,603.32/x
  3. Step 3: Cross multiply
    153,580.12x = 211,957.80 × 85,603.32
  4. Step 4: Simplify right side
    153,580.12x = 18,144,291,379.90
  5. Step 5: Solve for x
    x = 18,144,291,379.90/153,580.12
  6. Step 6: Final answer
    x = 118,142.19

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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.