Home / 142,747.16-215,124.00-128,533.03

Finding the Fourth Proportional to 142,747.16, 215,124.00 and 128,533.03

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Solution

The fourth proportional to 142,747.16, 215,124.00 and 128,533.03 is: 193,702.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,747.16 : 215,124.00 = 128,533.03 : x
  2. Step 2: Convert to fraction form
    142,747.16/215,124.00 = 128,533.03/x
  3. Step 3: Cross multiply
    142,747.16x = 215,124.00 × 128,533.03
  4. Step 4: Simplify right side
    142,747.16x = 27,650,539,248.91
  5. Step 5: Solve for x
    x = 27,650,539,248.91/142,747.16
  6. Step 6: Final answer
    x = 193,702.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.