Home / 112,639.68-155,435.76-62,339.76

Finding the Fourth Proportional to 112,639.68, 155,435.76 and 62,339.76

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Solution

The fourth proportional to 112,639.68, 155,435.76 and 62,339.76 is: 86,025.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,639.68 : 155,435.76 = 62,339.76 : x
  2. Step 2: Convert to fraction form
    112,639.68/155,435.76 = 62,339.76/x
  3. Step 3: Cross multiply
    112,639.68x = 155,435.76 × 62,339.76
  4. Step 4: Simplify right side
    112,639.68x = 9,689,827,973.82
  5. Step 5: Solve for x
    x = 9,689,827,973.82/112,639.68
  6. Step 6: Final answer
    x = 86,025.00

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1.5x scale

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.