Home / 105,340,004.28-145,359,348.66-65,643,854.76

Finding the Fourth Proportional to 105,340,004.28, 145,359,348.66 and 65,643,854.76

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Solution

The fourth proportional to 105,340,004.28, 145,359,348.66 and 65,643,854.76 is: 90,582,376.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,340,004.28 : 145,359,348.66 = 65,643,854.76 : x
  2. Step 2: Convert to fraction form
    105,340,004.28/145,359,348.66 = 65,643,854.76/x
  3. Step 3: Cross multiply
    105,340,004.28x = 145,359,348.66 × 65,643,854.76
  4. Step 4: Simplify right side
    105,340,004.28x = 9,541,947,971,445,240
  5. Step 5: Solve for x
    x = 9,541,947,971,445,240/105,340,004.28
  6. Step 6: Final answer
    x = 90,582,376.91

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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.