Home / 128,047.24-176,705.22-71,457.40

Finding the Fourth Proportional to 128,047.24, 176,705.22 and 71,457.40

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Solution

The fourth proportional to 128,047.24, 176,705.22 and 71,457.40 is: 98,611.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,047.24 : 176,705.22 = 71,457.40 : x
  2. Step 2: Convert to fraction form
    128,047.24/176,705.22 = 71,457.40/x
  3. Step 3: Cross multiply
    128,047.24x = 176,705.22 × 71,457.40
  4. Step 4: Simplify right side
    128,047.24x = 12,626,895,587.63
  5. Step 5: Solve for x
    x = 12,626,895,587.63/128,047.24
  6. Step 6: Final answer
    x = 98,611.23

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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.