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Finding the Fourth Proportional to 185,313.78, 255,733.74 and 100,430.91

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Solution

The fourth proportional to 185,313.78, 255,733.74 and 100,430.91 is: 138,595.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,313.78 : 255,733.74 = 100,430.91 : x
  2. Step 2: Convert to fraction form
    185,313.78/255,733.74 = 100,430.91/x
  3. Step 3: Cross multiply
    185,313.78x = 255,733.74 × 100,430.91
  4. Step 4: Simplify right side
    185,313.78x = 25,683,572,225.90
  5. Step 5: Solve for x
    x = 25,683,572,225.90/185,313.78
  6. Step 6: Final answer
    x = 138,595.05

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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.