Home / 156,130.52-215,460-84,510.54

Finding the Fourth Proportional to 156,130.52, 215,460 and 84,510.54

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Solution

The fourth proportional to 156,130.52, 215,460 and 84,510.54 is: 116,624.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,130.52 : 215,460 = 84,510.54 : x
  2. Step 2: Convert to fraction form
    156,130.52/215,460 = 84,510.54/x
  3. Step 3: Cross multiply
    156,130.52x = 215,460 × 84,510.54
  4. Step 4: Simplify right side
    156,130.52x = 18,208,640,948.40
  5. Step 5: Solve for x
    x = 18,208,640,948.40/156,130.52
  6. Step 6: Final answer
    x = 116,624.49

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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.