Home / 103,429,280.70-155,143,921.05-90,674,696.70

Finding the Fourth Proportional to 103,429,280.70, 155,143,921.05 and 90,674,696.70

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Solution

The fourth proportional to 103,429,280.70, 155,143,921.05 and 90,674,696.70 is: 136,012,045.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,429,280.70 : 155,143,921.05 = 90,674,696.70 : x
  2. Step 2: Convert to fraction form
    103,429,280.70/155,143,921.05 = 90,674,696.70/x
  3. Step 3: Cross multiply
    103,429,280.70x = 155,143,921.05 × 90,674,696.70
  4. Step 4: Simplify right side
    103,429,280.70x = 14,067,627,986,057,498
  5. Step 5: Solve for x
    x = 14,067,627,986,057,498/103,429,280.70
  6. Step 6: Final answer
    x = 136,012,045.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.