Home / 211,281,890.61-291,563,383.17-121,970,820.60

Finding the Fourth Proportional to 211,281,890.61, 291,563,383.17 and 121,970,820.60

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Solution

The fourth proportional to 211,281,890.61, 291,563,383.17 and 121,970,820.60 is: 168,316,484.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,281,890.61 : 291,563,383.17 = 121,970,820.60 : x
  2. Step 2: Convert to fraction form
    211,281,890.61/291,563,383.17 = 121,970,820.60/x
  3. Step 3: Cross multiply
    211,281,890.61x = 291,563,383.17 × 121,970,820.60
  4. Step 4: Simplify right side
    211,281,890.61x = 35,562,225,102,157,128
  5. Step 5: Solve for x
    x = 35,562,225,102,157,128/211,281,890.61
  6. Step 6: Final answer
    x = 168,316,484.67

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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.