Home / 147,312.78-203,285.08-86,064.66

Finding the Fourth Proportional to 147,312.78, 203,285.08 and 86,064.66

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Solution

The fourth proportional to 147,312.78, 203,285.08 and 86,064.66 is: 118,765.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,312.78 : 203,285.08 = 86,064.66 : x
  2. Step 2: Convert to fraction form
    147,312.78/203,285.08 = 86,064.66/x
  3. Step 3: Cross multiply
    147,312.78x = 203,285.08 × 86,064.66
  4. Step 4: Simplify right side
    147,312.78x = 17,495,661,293.27
  5. Step 5: Solve for x
    x = 17,495,661,293.27/147,312.78
  6. Step 6: Final answer
    x = 118,765.40

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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.