Home / 129,288,438.90-178,421,831.46-70,554,888.54

Finding the Fourth Proportional to 129,288,438.90, 178,421,831.46 and 70,554,888.54

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Solution

The fourth proportional to 129,288,438.90, 178,421,831.46 and 70,554,888.54 is: 97,367,812.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,288,438.90 : 178,421,831.46 = 70,554,888.54 : x
  2. Step 2: Convert to fraction form
    129,288,438.90/178,421,831.46 = 70,554,888.54/x
  3. Step 3: Cross multiply
    129,288,438.90x = 178,421,831.46 × 70,554,888.54
  4. Step 4: Simplify right side
    129,288,438.90x = 12,588,532,431,762,968
  5. Step 5: Solve for x
    x = 12,588,532,431,762,968/129,288,438.90
  6. Step 6: Final answer
    x = 97,367,812.15

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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.