Home / 128,427.60-177,225.51-71,065.94

Finding the Fourth Proportional to 128,427.60, 177,225.51 and 71,065.94

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Solution

The fourth proportional to 128,427.60, 177,225.51 and 71,065.94 is: 98,068.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,427.60 : 177,225.51 = 71,065.94 : x
  2. Step 2: Convert to fraction form
    128,427.60/177,225.51 = 71,065.94/x
  3. Step 3: Cross multiply
    128,427.60x = 177,225.51 × 71,065.94
  4. Step 4: Simplify right side
    128,427.60x = 12,594,696,840.50
  5. Step 5: Solve for x
    x = 12,594,696,840.50/128,427.60
  6. Step 6: Final answer
    x = 98,068.46

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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.