Home / 128,013.19-176,657.46-69,869.95

Finding the Fourth Proportional to 128,013.19, 176,657.46 and 69,869.95

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Solution

The fourth proportional to 128,013.19, 176,657.46 and 69,869.95 is: 96,420.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,013.19 : 176,657.46 = 69,869.95 : x
  2. Step 2: Convert to fraction form
    128,013.19/176,657.46 = 69,869.95/x
  3. Step 3: Cross multiply
    128,013.19x = 176,657.46 × 69,869.95
  4. Step 4: Simplify right side
    128,013.19x = 12,343,047,897.33
  5. Step 5: Solve for x
    x = 12,343,047,897.33/128,013.19
  6. Step 6: Final answer
    x = 96,420.13

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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.