Home / 103,048.90-142,155.25-64,254.87

Finding the Fourth Proportional to 103,048.90, 142,155.25 and 64,254.87

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Solution

The fourth proportional to 103,048.90, 142,155.25 and 64,254.87 is: 88,639.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,048.90 : 142,155.25 = 64,254.87 : x
  2. Step 2: Convert to fraction form
    103,048.90/142,155.25 = 64,254.87/x
  3. Step 3: Cross multiply
    103,048.90x = 142,155.25 × 64,254.87
  4. Step 4: Simplify right side
    103,048.90x = 9,134,166,947.93
  5. Step 5: Solve for x
    x = 9,134,166,947.93/103,048.90
  6. Step 6: Final answer
    x = 88,639.15

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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.