Home / 124,070.10-171,255.70-70,390.78

Finding the Fourth Proportional to 124,070.10, 171,255.70 and 70,390.78

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Solution

The fourth proportional to 124,070.10, 171,255.70 and 70,390.78 is: 97,161.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,070.10 : 171,255.70 = 70,390.78 : x
  2. Step 2: Convert to fraction form
    124,070.10/171,255.70 = 70,390.78/x
  3. Step 3: Cross multiply
    124,070.10x = 171,255.70 × 70,390.78
  4. Step 4: Simplify right side
    124,070.10x = 12,054,822,302.45
  5. Step 5: Solve for x
    x = 12,054,822,302.45/124,070.10
  6. Step 6: Final answer
    x = 97,161.38

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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.