Home / 153,788.34-212,228.08-90,126.20

Finding the Fourth Proportional to 153,788.34, 212,228.08 and 90,126.20

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Solution

The fourth proportional to 153,788.34, 212,228.08 and 90,126.20 is: 124,374.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,788.34 : 212,228.08 = 90,126.20 : x
  2. Step 2: Convert to fraction form
    153,788.34/212,228.08 = 90,126.20/x
  3. Step 3: Cross multiply
    153,788.34x = 212,228.08 × 90,126.20
  4. Step 4: Simplify right side
    153,788.34x = 19,127,310,383.70
  5. Step 5: Solve for x
    x = 19,127,310,383.70/153,788.34
  6. Step 6: Final answer
    x = 124,374.26

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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.