Home / 157,979.90-218,012.28-86,360.24

Finding the Fourth Proportional to 157,979.90, 218,012.28 and 86,360.24

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Solution

The fourth proportional to 157,979.90, 218,012.28 and 86,360.24 is: 119,177.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,979.90 : 218,012.28 = 86,360.24 : x
  2. Step 2: Convert to fraction form
    157,979.90/218,012.28 = 86,360.24/x
  3. Step 3: Cross multiply
    157,979.90x = 218,012.28 × 86,360.24
  4. Step 4: Simplify right side
    157,979.90x = 18,827,592,823.75
  5. Step 5: Solve for x
    x = 18,827,592,823.75/157,979.90
  6. Step 6: Final answer
    x = 119,177.14

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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.