Home / 112,870.46-155,811.40-72,088.08

Finding the Fourth Proportional to 112,870.46, 155,811.40 and 72,088.08

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Solution

The fourth proportional to 112,870.46, 155,811.40 and 72,088.08 is: 99,513.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,870.46 : 155,811.40 = 72,088.08 : x
  2. Step 2: Convert to fraction form
    112,870.46/155,811.40 = 72,088.08/x
  3. Step 3: Cross multiply
    112,870.46x = 155,811.40 × 72,088.08
  4. Step 4: Simplify right side
    112,870.46x = 11,232,143,903.60
  5. Step 5: Solve for x
    x = 11,232,143,903.60/112,870.46
  6. Step 6: Final answer
    x = 99,513.58

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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.