Home / 153,717.90-212,147.01-90,109.14

Finding the Fourth Proportional to 153,717.90, 212,147.01 and 90,109.14

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Solution

The fourth proportional to 153,717.90, 212,147.01 and 90,109.14 is: 124,360.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,717.90 : 212,147.01 = 90,109.14 : x
  2. Step 2: Convert to fraction form
    153,717.90/212,147.01 = 90,109.14/x
  3. Step 3: Cross multiply
    153,717.90x = 212,147.01 × 90,109.14
  4. Step 4: Simplify right side
    153,717.90x = 19,116,384,624.67
  5. Step 5: Solve for x
    x = 19,116,384,624.67/153,717.90
  6. Step 6: Final answer
    x = 124,360.17

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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.