Home / 128,088.40-176,754.66-71,503.36

Finding the Fourth Proportional to 128,088.40, 176,754.66 and 71,503.36

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Solution

The fourth proportional to 128,088.40, 176,754.66 and 71,503.36 is: 98,670.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,088.40 : 176,754.66 = 71,503.36 : x
  2. Step 2: Convert to fraction form
    128,088.40/176,754.66 = 71,503.36/x
  3. Step 3: Cross multiply
    128,088.40x = 176,754.66 × 71,503.36
  4. Step 4: Simplify right side
    128,088.40x = 12,638,552,085.66
  5. Step 5: Solve for x
    x = 12,638,552,085.66/128,088.40
  6. Step 6: Final answer
    x = 98,670.54

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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.