Home / 153,996.04-212,518.02-90,379.72

Finding the Fourth Proportional to 153,996.04, 212,518.02 and 90,379.72

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Solution

The fourth proportional to 153,996.04, 212,518.02 and 90,379.72 is: 124,726.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,996.04 : 212,518.02 = 90,379.72 : x
  2. Step 2: Convert to fraction form
    153,996.04/212,518.02 = 90,379.72/x
  3. Step 3: Cross multiply
    153,996.04x = 212,518.02 × 90,379.72
  4. Step 4: Simplify right side
    153,996.04x = 19,207,319,142.55
  5. Step 5: Solve for x
    x = 19,207,319,142.55/153,996.04
  6. Step 6: Final answer
    x = 124,726.06

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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.