Home / 153,750.03-212,170.23-90,130.20

Finding the Fourth Proportional to 153,750.03, 212,170.23 and 90,130.20

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Solution

The fourth proportional to 153,750.03, 212,170.23 and 90,130.20 is: 124,376.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,750.03 : 212,170.23 = 90,130.20 : x
  2. Step 2: Convert to fraction form
    153,750.03/212,170.23 = 90,130.20/x
  3. Step 3: Cross multiply
    153,750.03x = 212,170.23 × 90,130.20
  4. Step 4: Simplify right side
    153,750.03x = 19,122,945,263.95
  5. Step 5: Solve for x
    x = 19,122,945,263.95/153,750.03
  6. Step 6: Final answer
    x = 124,376.86

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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.