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Finding the Fourth Proportional to 153,875.98, 212,384.28 and 90,234.28

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Solution

The fourth proportional to 153,875.98, 212,384.28 and 90,234.28 is: 124,544.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,875.98 : 212,384.28 = 90,234.28 : x
  2. Step 2: Convert to fraction form
    153,875.98/212,384.28 = 90,234.28/x
  3. Step 3: Cross multiply
    153,875.98x = 212,384.28 × 90,234.28
  4. Step 4: Simplify right side
    153,875.98x = 19,164,342,589.12
  5. Step 5: Solve for x
    x = 19,164,342,589.12/153,875.98
  6. Step 6: Final answer
    x = 124,544.08

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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.