Home / 90,989,458.20-136,484,187.30-39,971,122.20

Finding the Fourth Proportional to 90,989,458.20, 136,484,187.30 and 39,971,122.20

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Solution

The fourth proportional to 90,989,458.20, 136,484,187.30 and 39,971,122.20 is: 59,956,683.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,989,458.20 : 136,484,187.30 = 39,971,122.20 : x
  2. Step 2: Convert to fraction form
    90,989,458.20/136,484,187.30 = 39,971,122.20/x
  3. Step 3: Cross multiply
    90,989,458.20x = 136,484,187.30 × 39,971,122.20
  4. Step 4: Simplify right side
    90,989,458.20x = 5,455,426,128,935,989
  5. Step 5: Solve for x
    x = 5,455,426,128,935,989/90,989,458.20
  6. Step 6: Final answer
    x = 59,956,683.30

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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.