Home / 129,726,510.56-179,022,598.74-70,989,188.12

Finding the Fourth Proportional to 129,726,510.56, 179,022,598.74 and 70,989,188.12

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Solution

The fourth proportional to 129,726,510.56, 179,022,598.74 and 70,989,188.12 is: 97,965,087.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,726,510.56 : 179,022,598.74 = 70,989,188.12 : x
  2. Step 2: Convert to fraction form
    129,726,510.56/179,022,598.74 = 70,989,188.12/x
  3. Step 3: Cross multiply
    129,726,510.56x = 179,022,598.74 × 70,989,188.12
  4. Step 4: Simplify right side
    129,726,510.56x = 12,708,668,939,685,136
  5. Step 5: Solve for x
    x = 12,708,668,939,685,136/129,726,510.56
  6. Step 6: Final answer
    x = 97,965,087.36

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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.