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Finding the Fourth Proportional to 124,385.70, 171,685.80 and 70,672.98

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Solution

The fourth proportional to 124,385.70, 171,685.80 and 70,672.98 is: 97,547.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,385.70 : 171,685.80 = 70,672.98 : x
  2. Step 2: Convert to fraction form
    124,385.70/171,685.80 = 70,672.98/x
  3. Step 3: Cross multiply
    124,385.70x = 171,685.80 × 70,672.98
  4. Step 4: Simplify right side
    124,385.70x = 12,133,547,109.68
  5. Step 5: Solve for x
    x = 12,133,547,109.68/124,385.70
  6. Step 6: Final answer
    x = 97,547.77

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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.