Home / 153,775.04-212,204.72-90,155.20

Finding the Fourth Proportional to 153,775.04, 212,204.72 and 90,155.20

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Solution

The fourth proportional to 153,775.04, 212,204.72 and 90,155.20 is: 124,411.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,775.04 : 212,204.72 = 90,155.20 : x
  2. Step 2: Convert to fraction form
    153,775.04/212,204.72 = 90,155.20/x
  3. Step 3: Cross multiply
    153,775.04x = 212,204.72 × 90,155.20
  4. Step 4: Simplify right side
    153,775.04x = 19,131,358,972.54
  5. Step 5: Solve for x
    x = 19,131,358,972.54/153,775.04
  6. Step 6: Final answer
    x = 124,411.34

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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.