Home / 128,054.86-176,725.48-70,705.24

Finding the Fourth Proportional to 128,054.86, 176,725.48 and 70,705.24

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Solution

The fourth proportional to 128,054.86, 176,725.48 and 70,705.24 is: 97,578.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,054.86 : 176,725.48 = 70,705.24 : x
  2. Step 2: Convert to fraction form
    128,054.86/176,725.48 = 70,705.24/x
  3. Step 3: Cross multiply
    128,054.86x = 176,725.48 × 70,705.24
  4. Step 4: Simplify right side
    128,054.86x = 12,495,417,477.52
  5. Step 5: Solve for x
    x = 12,495,417,477.52/128,054.86
  6. Step 6: Final answer
    x = 97,578.63

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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.