Home / 157,640.10-217,537.51-86,018.58

Finding the Fourth Proportional to 157,640.10, 217,537.51 and 86,018.58

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Solution

The fourth proportional to 157,640.10, 217,537.51 and 86,018.58 is: 118,702.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,640.10 : 217,537.51 = 86,018.58 : x
  2. Step 2: Convert to fraction form
    157,640.10/217,537.51 = 86,018.58/x
  3. Step 3: Cross multiply
    157,640.10x = 217,537.51 × 86,018.58
  4. Step 4: Simplify right side
    157,640.10x = 18,712,267,706.94
  5. Step 5: Solve for x
    x = 18,712,267,706.94/157,640.10
  6. Step 6: Final answer
    x = 118,702.46

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1.5x scale

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.