Home / 205,362.90-308,001.15-87,038.10

Finding the Fourth Proportional to 205,362.90, 308,001.15 and 87,038.10

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Solution

The fourth proportional to 205,362.90, 308,001.15 and 87,038.10 is: 130,538.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,362.90 : 308,001.15 = 87,038.10 : x
  2. Step 2: Convert to fraction form
    205,362.90/308,001.15 = 87,038.10/x
  3. Step 3: Cross multiply
    205,362.90x = 308,001.15 × 87,038.10
  4. Step 4: Simplify right side
    205,362.90x = 26,807,834,893.82
  5. Step 5: Solve for x
    x = 26,807,834,893.82/205,362.90
  6. Step 6: Final answer
    x = 130,538.84

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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.