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Finding the Fourth Proportional to 131,492.32, 181,472.10 and 77,794.60

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Solution

The fourth proportional to 131,492.32, 181,472.10 and 77,794.60 is: 107,364.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,492.32 : 181,472.10 = 77,794.60 : x
  2. Step 2: Convert to fraction form
    131,492.32/181,472.10 = 77,794.60/x
  3. Step 3: Cross multiply
    131,492.32x = 181,472.10 × 77,794.60
  4. Step 4: Simplify right side
    131,492.32x = 14,117,549,430.66
  5. Step 5: Solve for x
    x = 14,117,549,430.66/131,492.32
  6. Step 6: Final answer
    x = 107,364.06

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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.