Home / 129,868,370.42-179,218,447.83-70,330,128.80

Finding the Fourth Proportional to 129,868,370.42, 179,218,447.83 and 70,330,128.80

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Solution

The fourth proportional to 129,868,370.42, 179,218,447.83 and 70,330,128.80 is: 97,055,630.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,868,370.42 : 179,218,447.83 = 70,330,128.80 : x
  2. Step 2: Convert to fraction form
    129,868,370.42/179,218,447.83 = 70,330,128.80/x
  3. Step 3: Cross multiply
    129,868,370.42x = 179,218,447.83 × 70,330,128.80
  4. Step 4: Simplify right side
    129,868,370.42x = 12,604,456,518,323,890
  5. Step 5: Solve for x
    x = 12,604,456,518,323,890/129,868,370.42
  6. Step 6: Final answer
    x = 97,055,630.08

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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.