Home / 128,250.40-176,980.02-70,886.74

Finding the Fourth Proportional to 128,250.40, 176,980.02 and 70,886.74

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Solution

The fourth proportional to 128,250.40, 176,980.02 and 70,886.74 is: 97,820.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,250.40 : 176,980.02 = 70,886.74 : x
  2. Step 2: Convert to fraction form
    128,250.40/176,980.02 = 70,886.74/x
  3. Step 3: Cross multiply
    128,250.40x = 176,980.02 × 70,886.74
  4. Step 4: Simplify right side
    128,250.40x = 12,545,536,662.93
  5. Step 5: Solve for x
    x = 12,545,536,662.93/128,250.40
  6. Step 6: Final answer
    x = 97,820.64

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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.