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Finding the Fourth Proportional to 127,483.12, 191,159.40 and 74,908.40

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Solution

The fourth proportional to 127,483.12, 191,159.40 and 74,908.40 is: 112,324.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,483.12 : 191,159.40 = 74,908.40 : x
  2. Step 2: Convert to fraction form
    127,483.12/191,159.40 = 74,908.40/x
  3. Step 3: Cross multiply
    127,483.12x = 191,159.40 × 74,908.40
  4. Step 4: Simplify right side
    127,483.12x = 14,319,444,798.96
  5. Step 5: Solve for x
    x = 14,319,444,798.96/127,483.12
  6. Step 6: Final answer
    x = 112,324.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.