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Finding the Fourth Proportional to 162,870.40, 224,869.44 and 125,077.12

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Solution

The fourth proportional to 162,870.40, 224,869.44 and 125,077.12 is: 172,689.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,870.40 : 224,869.44 = 125,077.12 : x
  2. Step 2: Convert to fraction form
    162,870.40/224,869.44 = 125,077.12/x
  3. Step 3: Cross multiply
    162,870.40x = 224,869.44 × 125,077.12
  4. Step 4: Simplify right side
    162,870.40x = 28,126,021,931.21
  5. Step 5: Solve for x
    x = 28,126,021,931.21/162,870.40
  6. Step 6: Final answer
    x = 172,689.59

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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.