Home / 157,756,931.70-217,715,831.10-87,191,025.45

Finding the Fourth Proportional to 157,756,931.70, 217,715,831.10 and 87,191,025.45

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Solution

The fourth proportional to 157,756,931.70, 217,715,831.10 and 87,191,025.45 is: 120,329,841.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,756,931.70 : 217,715,831.10 = 87,191,025.45 : x
  2. Step 2: Convert to fraction form
    157,756,931.70/217,715,831.10 = 87,191,025.45/x
  3. Step 3: Cross multiply
    157,756,931.70x = 217,715,831.10 × 87,191,025.45
  4. Step 4: Simplify right side
    157,756,931.70x = 18,982,866,570,308,000
  5. Step 5: Solve for x
    x = 18,982,866,570,308,000/157,756,931.70
  6. Step 6: Final answer
    x = 120,329,841.39

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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.