Home / 153,758.16-212,174.28-90,087.12

Finding the Fourth Proportional to 153,758.16, 212,174.28 and 90,087.12

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Solution

The fourth proportional to 153,758.16, 212,174.28 and 90,087.12 is: 124,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,758.16 : 212,174.28 = 90,087.12 : x
  2. Step 2: Convert to fraction form
    153,758.16/212,174.28 = 90,087.12/x
  3. Step 3: Cross multiply
    153,758.16x = 212,174.28 × 90,087.12
  4. Step 4: Simplify right side
    153,758.16x = 19,114,169,823.27
  5. Step 5: Solve for x
    x = 19,114,169,823.27/153,758.16
  6. Step 6: Final answer
    x = 124,313.21

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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.