Home / 138,045,866.28-190,572,328.20-85,851,716.46

Finding the Fourth Proportional to 138,045,866.28, 190,572,328.20 and 85,851,716.46

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Solution

The fourth proportional to 138,045,866.28, 190,572,328.20 and 85,851,716.46 is: 118,518,300.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,045,866.28 : 190,572,328.20 = 85,851,716.46 : x
  2. Step 2: Convert to fraction form
    138,045,866.28/190,572,328.20 = 85,851,716.46/x
  3. Step 3: Cross multiply
    138,045,866.28x = 190,572,328.20 × 85,851,716.46
  4. Step 4: Simplify right side
    138,045,866.28x = 16,360,961,485,748,460
  5. Step 5: Solve for x
    x = 16,360,961,485,748,460/138,045,866.28
  6. Step 6: Final answer
    x = 118,518,300.67

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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.