Home / 129,393,521-178,417,492.26-105,798,441.32

Finding the Fourth Proportional to 129,393,521, 178,417,492.26 and 105,798,441.32

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Solution

The fourth proportional to 129,393,521, 178,417,492.26 and 105,798,441.32 is: 145,882,826.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,393,521 : 178,417,492.26 = 105,798,441.32 : x
  2. Step 2: Convert to fraction form
    129,393,521/178,417,492.26 = 105,798,441.32/x
  3. Step 3: Cross multiply
    129,393,521x = 178,417,492.26 × 105,798,441.32
  4. Step 4: Simplify right side
    129,393,521x = 18,876,292,585,331,160
  5. Step 5: Solve for x
    x = 18,876,292,585,331,160/129,393,521
  6. Step 6: Final answer
    x = 145,882,826.59

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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.