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Finding the Fourth Proportional to 154,798.59, 213,622.44 and 90,312.17

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Solution

The fourth proportional to 154,798.59, 213,622.44 and 90,312.17 is: 124,631.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,798.59 : 213,622.44 = 90,312.17 : x
  2. Step 2: Convert to fraction form
    154,798.59/213,622.44 = 90,312.17/x
  3. Step 3: Cross multiply
    154,798.59x = 213,622.44 × 90,312.17
  4. Step 4: Simplify right side
    154,798.59x = 19,292,705,392.95
  5. Step 5: Solve for x
    x = 19,292,705,392.95/154,798.59
  6. Step 6: Final answer
    x = 124,631.01

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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.