Home / 202,875.36-304,312.80-78,128.88

Finding the Fourth Proportional to 202,875.36, 304,312.80 and 78,128.88

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Solution

The fourth proportional to 202,875.36, 304,312.80 and 78,128.88 is: 117,193.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,875.36 : 304,312.80 = 78,128.88 : x
  2. Step 2: Convert to fraction form
    202,875.36/304,312.80 = 78,128.88/x
  3. Step 3: Cross multiply
    202,875.36x = 304,312.80 × 78,128.88
  4. Step 4: Simplify right side
    202,875.36x = 23,775,618,233.66
  5. Step 5: Solve for x
    x = 23,775,618,233.66/202,875.36
  6. Step 6: Final answer
    x = 117,193.23

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1.5x scale

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.